# HG changeset patch
# User ethanzonca
# Date 2010-07-08 18:25:21
# Node ID 27edaecc0d90e59cb4cd707919c99c1ecc88beff

Initial import

diff --git a/class.class.php b/class.class.php
new file mode 100644
--- /dev/null
+++ b/class.class.php
@@ -0,0 +1,70 @@
+<?php
+
+//**************************************************
+// class.class.php	Author: Nathan Gelderloos
+//
+// Represents a class.
+//**************************************************
+
+include_once 'errors.php';
+include_once 'class.section.php';
+
+class Classes
+{
+	private $name;		// String
+    private $sections;	// Array of sections
+    private $nsections;	// int
+    
+	//--------------------------------------------------
+	// Creates a class with the given name.
+	//--------------------------------------------------
+    function __construct($n)
+    {
+		$this->name = $n;
+        $this->nsections = 0;
+    }
+	
+	//--------------------------------------------------
+	// Adds a new section to the class.
+	//--------------------------------------------------
+    function addSection($l, $p, $s, $e, $d)
+    {
+        $this->sections[$this->nsections] = new Section($l, $p, $s, $e, $d);
+        $this->nsections++;
+    }
+	
+	//--------------------------------------------------
+    // Returns the number of sections in the class.
+	//--------------------------------------------------
+    function getnsections()
+    {
+        return $this->nsections;
+    }
+	
+	//--------------------------------------------------
+	// Returns the desired section for analysis.
+	//--------------------------------------------------
+    function getSection($i)
+    {
+		// Checks to make sure the desired section is part of the set.
+        if(isset($this->sections[$i]))
+		{
+			//echo "Object sections[$i] was set<br />";
+        } else {
+            echo "Object sections[$i] was NOT set <br />";
+		}
+
+        $result = $this->sections[$i];
+        return $result;
+    }
+    
+	//--------------------------------------------------
+	// Returns the name of the class.
+	//--------------------------------------------------
+    function getName()
+    {
+        return $this->name;
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/class.schedule.php b/class.schedule.php
new file mode 100644
--- /dev/null
+++ b/class.schedule.php
@@ -0,0 +1,528 @@
+<?php
+
+//**************************************************
+// class.schedule.php	Author: Nathan Gelderloos
+//
+// Represents a schedule of a week. Stores the
+// classes that are part of that week and calculates
+// all the possible permutations.
+//**************************************************
+
+include_once 'errors.php';
+include_once 'class.class.php';
+include_once 'class.section.php';
+
+class Schedule
+{
+    private $classStorage;			// Classes array of classes
+    private $nclasses;				// Integer number of classes
+    private $nPermutations = 0;		// Integer number of real permutations
+    private $possiblePermutations;	// Integer number of possible permutations
+    private $scheduleName;			// String name of schedule
+    private $storage;				// Integer array of valid schedules
+    private $title = "SlatePermutate - Scheduler";
+
+	//--------------------------------------------------
+	// Creates a schedule with the given name.
+	//--------------------------------------------------
+	function __construct($n)
+	{
+        $this->nclasses = 0;
+        $this->scheduleName = $n; 
+    }
+    
+	//--------------------------------------------------
+	// Adds a new class to the schedule.
+	//--------------------------------------------------
+	function addClass($n)
+    {
+        $this->classStorage[$this->nclasses] = new Classes($n);
+        $this->nclasses++;
+    }
+
+	//--------------------------------------------------
+	// Adds a section to the desired class.
+	//--------------------------------------------------
+    function addSection($n, $l, $s, $e, $d)
+    {
+        $found = false;
+        $counter = 0;
+      
+        while(!$found && ($counter < $this->nclasses))
+        {
+			$temp = $this->classStorage[$counter]->getName();
+			
+			if((strcmp($temp,$n)) == 0)
+            {
+				$found = true;
+            } else {
+				$counter++;
+			}
+		}
+		
+		if($counter == $this->nclasses)
+		{
+			echo "Could not find class: " . $n . "<br />";
+        } else {
+			$p = "unknown prof";
+            $this->classStorage[$counter]->addSection($l, $p, $s, $e, $d);
+        }
+    }
+
+	//--------------------------------------------------
+	// Finds all of the possible permutations and stores
+	// the results in the storage array.
+	//--------------------------------------------------
+	function findPossibilities()
+	{
+        $this->possiblePermutations = 1;
+		$position = 0;
+		$counter = 0;
+
+        for($i = 0; $i < $this->nclasses; $i++)
+        {
+			$this->possiblePermutations = $this->possiblePermutations * $this->classStorage[$i]->getnsections();
+			$cs[$i] = 0;	// Sets the counter array to all zeroes.
+        }
+        
+		// Checks for conflicts in given classes, stores if none found
+        do
+        {
+			$conflict = false;
+			$upCounter = 0;
+         
+			// Get first class to compare
+			while($upCounter < $this->nclasses)
+			{
+				$downCounter = $this->nclasses-1;
+				while($downCounter > $upCounter)
+				{
+					$start1 = $this->classStorage[$upCounter]->getSection($cs[$upCounter])->getStartTime();
+					$end1 = $this->classStorage[$upCounter]->getSection($cs[$upCounter])->getEndTime();
+					$start2 = $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getStartTime();
+					$end2 = $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getEndTime();
+					
+					// If the two times overlap, then check if days overlap.
+					if(!$conflict && ((($start1 >= $start2) && ($start1 <= $end2)) || (($start2 >= $start1) && ($start2 <= $end1))))
+					{
+						// Monday
+						if(!$conflict && ($this->classStorage[$upCounter]->getSection($cs[$upCounter])->getM() == $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getM()))
+						{
+							$conflict = true;
+						}
+						
+						// Tuesday
+						if(!$conflict && ($this->classStorage[$upCounter]->getSection($cs[$upCounter])->getTu() == $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getTu()))
+						{
+							$conflict = true;
+						}
+						
+						// Wednesday
+						if(!$conflict && ($this->classStorage[$upCounter]->getSection($cs[$upCounter])->getW() == $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getW()))
+						{
+							$conflict = true;
+						}
+						
+						// Thursday
+						if(!$conflict && ($this->classStorage[$upCounter]->getSection($cs[$upCounter])->getTh() == $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getTh()))
+						{
+							$conflict = true;
+						}
+						
+						// Friday
+						if(!$conflict && ($this->classStorage[$upCounter]->getSection($cs[$upCounter])->getF() == $this->classStorage[$downCounter]->getSection($cs[$downCounter])->getF()))
+						{
+							$conflict = true;
+						}
+					}
+               
+					$downCounter--;
+				}
+				
+				$upCounter++;
+            }
+            
+			// Store to storage if no conflict is found.
+			if(!$conflict)
+			{
+				for($i = 0; $i < $this->nclasses; $i++)
+				{
+					$this->storage[$this->nPermutations][$i] = $cs[$i];
+				}
+				$this->nPermutations++;
+			}
+			
+			// Increase the counter by one to get the next combination of class sections.
+			$cs[$position] = $cs[$position] + 1;
+			
+			// Check to make sure the counter is still valid.
+			$valid = false;
+			while(!$valid)
+			{
+				if($cs[$position] == $this->classStorage[$position]->getnsections())
+				{
+					$cs[$position] = 0;
+
+					$position++;
+					
+					// This is for the very last permutation. Even 
+					// though the combination is not actually true
+					// the larger while loop will end before any 
+					// new combinations are performed.
+					if($position == $this->nclasses)
+					{
+						$valid = true;
+					} else {
+						$cs[$position]++;
+					}
+				} else {
+					$valid = true;
+					$position = 0;
+				}
+            }
+            
+			$counter++;
+		} while($counter < $this->possiblePermutations);
+	}
+    
+	//--------------------------------------------------
+	// Prints out the possible permutations in tables.
+	//--------------------------------------------------
+	function writeoutTables()
+	{
+		$table = "";
+		$header = "";
+		$footer = "";
+		$M = -1;
+		$Tu = -1;
+		$W = -1;
+		$Th = -1;
+		$F = -1;
+		$filled = false;
+		$time = array(700,730,800,830,900,930,1000,1030,1100,1130,1200,1230,1300,1330,1400,1430,1500,1530,1600,1630,1700,1730,1800,1830,1900,1930,2000,2030,2100,2130, 2200);
+
+		// Reminder:
+		// border-style:top right bottom left
+		$header .= "<html><head><title>" . $this->title . "</title>\n\n<style type=\"text/css\">".
+				"\n.top{\n\tborder-style:solid solid none solid;\nbackground-color:#dddddd;\n}".
+				"\n.mid{\n\tborder-style:none solid none solid;\nbackground-color:#dddddd;\n}".
+				"\n.end{\n\tborder-style:none solid solid solid;\nbackground-color:#dddddd;\n}".
+				"\n.none{\n\tborder-style:none;\n}".
+				"\n.single{\n\tborder-style:solid;\n\tbackground-color:#dddddd;\n}".
+				"\ntd{\n\ttext-align:center;\nwidth:7em;\n}".
+				"\n.time{\n\tborder-style:none none solid none;\n}".
+				"\n.day{\n\tborder-style:none none solid solid;\n}".
+				
+			"\n</style>".
+
+			"\n<script src=\"http://www.google.com/jsapi\"></script>".
+			"\n<script type=\"text/javascript\" charset=\"utf-8\">".
+			"\n\tgoogle.load(\"jquery\", \"1.3.2\");".
+			"\n\tgoogle.load(\"jqueryui\", \"1.7.2\");".
+			"\n</script>".
+
+			"\n<link rel=\"stylesheet\" href=\"styles/general.css\" type=\"text/css\" media=\"screen\" charset=\"utf-8\">".
+
+			"\n<link rel=\"stylesheet\" href=\"glider.css\" type=\"text/css\" media=\"screen\" charset=\"utf-8\">".
+			"\n<script src=\"prototype.js\" type=\"text/javascript\" charset=\"utf-8\"></script>". 
+			"\n<script src=\"effects.js\" type=\"text/javascript\" charset=\"utf-8\"></script>".
+			"\n<script src=\"glider.js\" type=\"text/javascript\" charset=\"utf-8\"></script>".
+			
+			"\n</head><body>".
+
+			"<p>There were a total of " . $this->possiblePermutations . " possible permutations. Only " . $this->nPermutations . " permutations had no class conflicts.</p>".
+
+			"\n\n<div id=\"header\">\n<h1><em>SlatePermutate</em> - Scheduler</h1>\n</div><div id=\"content\">";
+			
+		$footer .="</div></div><script type=\"text/javascript\" charset=\"utf-8\">". 
+			"\n\tvar my_glider = new Glider('my-glider', {duration:0});".
+			"\n</script>\n\n</div><div id=\"footer\">\n<h5>&copy; 2010 Nathan Gelderloos<br />".
+			"\nwith special thanks to <a href=\"http://ethanzonca.com\">Ethan Zonca</a></h5>\n</div>";
+
+		$footer .="\n\n</body></html>";
+
+		if($this->nPermutations > 0)
+		{
+			$table .= "<div id=\"my-glider\"><div class=\"controls\">";
+			
+			for($nn = 1; $nn <= $this->nPermutations; $nn++)
+			{
+			$table .= "<a href=\"#section" . $nn . "\">&nbsp;" . $nn . "&nbsp;</a>";
+			}
+			
+			$table .= "</div><div class=\"scroller\"><div class=\"scontent\">";
+		
+			for($i = 0; $i < $this->nPermutations; $i++)
+			{
+				$table .= "<div class=\"section\" id=\"section" . ($i+1) . "\">";
+  
+				// Beginning of table
+				$table .= "<table style=\"empty-cells:show;\" border=\"1\" cellspacing=\"0\">";
+				
+				// Header row
+				$table .= "\n\t<tr>\n\t\t<td class=\"none\">" . ($i+1) . "</td>\n\t\t<td class=\"day\">Monday</td>\n\t\t<td class=\"day\">Tuesday</td>\n\t\t<td class=\"day\">Wednesday</td>\n\t\t<td class=\"day\">Thursday</td>\n\t\t<td class=\"day\">Friday</td>\n\t</tr>";
+
+				for($r = 0; $r < (count($time)-1); $r++)
+				{
+					// Beginning of new row
+					$temp = $time[$r];
+					if($temp > 1259)
+					{
+						$temp = $temp-1200;
+					}
+
+					$table .= "\n\t<tr>\n\t\t<td class=\"time\">" . $this->prettyTime($time[$r]) . "</td>";
+
+					//---------------MONDAY---------------
+					for($j = 0; $j < $this->nclasses; $j++)
+					{
+						if($M == -1)
+						{
+							if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getM())
+							{
+								if(($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() >= $time[$r]) && ($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() < $time[$r+1]))
+								{
+									if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+									{
+										$table .= "\n\t\t<td class=\"top\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$M = $j;
+										$filled = true;
+									} else {
+										$table .= "\n\t\t<td class=\"single\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$filled = true;
+									}
+								}
+							}
+						} else {
+							if($j == $M)
+							{
+								if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+								{
+									$table .= "\n\t\t<td class=\"mid\">&nbsp;</td>";
+									$filled = true;
+								} else {
+									$table .= "\n\t\t<td class=\"end\">&nbsp;</td>";
+									$M = -1;
+									$filled = true;
+								}
+							}
+						}
+					}
+					
+					// If the cell was not filled, fill it with an empty cell.
+					if(!$filled)
+					{
+						$table .= "\n\t\t<td class=\"none\">&nbsp;</td>";
+					}
+					$filled = false;
+               	                     
+					//---------------TUESDAY---------------
+					for($j = 0; $j < $this->nclasses; $j++)
+					{
+						if($Tu == -1)
+						{
+							if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getTu())
+							{
+								if(($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() >= $time[$r]) && ($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() < $time[$r+1]))
+								{
+									if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+									{
+										$table .= "\n\t\t<td class=\"top\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$Tu = $j;
+										$filled = true;
+									} else {
+										$table .= "\n\t\t<td class=\"single\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$filled = true;
+									}
+								}
+							}
+						} else {
+							if($j == $Tu)
+							{
+								if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+								{
+									$table .= "\n\t\t<td class=\"mid\">&nbsp;</td>";
+									$filled = true;
+								} else {
+									$table .= "\n\t\t<td class=\"end\">&nbsp;</td>";
+									$Tu = -1;
+									$filled = true;
+								}
+							}
+						}
+					}
+					
+					// If the cell was not filled, fill it with an empty cell.
+					if(!$filled)
+					{
+						$table .= "\n\t\t<td class=\"none\">&nbsp;</td>";
+					}
+					$filled = false;
+	
+					//---------------WEDNESDAY---------------
+					for($j = 0; $j < $this->nclasses; $j++)
+					{
+						if($W == -1)
+						{
+							if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getW())
+							{
+								if(($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() >= $time[$r]) && ($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() < $time[$r+1]))
+								{
+									if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+									{
+										$table .= "\n\t\t<td class=\"top\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$W = $j;
+										$filled = true;
+									} else {
+										$table .= "\n\t\t<td class=\"single\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$filled = true;
+									}
+								}
+							}
+						} else {
+							if($j == $W)
+							{
+								if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+								{
+									$table .= "\n\t\t<td class=\"mid\">&nbsp;</td>";
+									$filled = true;
+								} else {
+									$table .= "\n\t\t<td class=\"end\">&nbsp;</td>";
+									$W = -1;
+									$filled = true;
+								}
+							}
+						}
+					}
+					
+					// If the cell was not filled, fill it with an empty cell.
+					if(!$filled)
+					{
+						$table .= "\n\t\t<td class=\"none\">&nbsp;</td>";
+					}
+					$filled = false;
+
+					//---------------THURSDAY---------------
+					for($j = 0; $j < $this->nclasses; $j++)
+					{
+						if($Th == -1)
+						{
+							if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getTh())
+							{
+								if(($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() >= $time[$r]) && ($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() < $time[$r+1]))
+								{
+									if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+									{
+										$table .= "\n\t\t<td class=\"top\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$Th = $j;
+										$filled = true;
+									} else {
+										$table .= "\n\t\t<td class=\"single\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$filled = true;
+									}
+								}
+							}
+						} else {
+							if($j == $Th)
+							{
+								if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+								{
+									$table .= "\n\t\t<td class=\"mid\">&nbsp;</td>";
+									$filled = true;
+								} else {
+									$table .= "\n\t\t<td class=\"end\">&nbsp;</td>";
+									$Th = -1;
+									$filled = true;
+								}
+							}
+						}
+					}
+					
+					// If the cell was not filled, fill it with an empty cell.
+					if(!$filled)
+					{
+						$table .= "\n\t\t<td class=\"none\">&nbsp;</td>";
+					}
+					$filled = false;
+
+					//---------------FRIDAY---------------
+					for($j = 0; $j < $this->nclasses; $j++)
+					{
+						if($F == -1)
+						{
+							if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getF())
+							{
+								if(($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() >= $time[$r]) && ($this->classStorage[$j]->getSection($this->storage[$i][$j])->getStartTime() < $time[$r+1]))
+								{
+									if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+									{
+										$table .= "\n\t\t<td class=\"top\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$F = $j;
+										$filled = true;
+									} else {
+										$table .= "\n\t\t<td class=\"single\">" . $this->classStorage[$j]->getName() . " " . $this->classStorage[$j]->getSection($this->storage[$i][$j])->getLetter() . "</td>";
+										$filled = true;
+									}
+								}
+							}
+						} else {
+							if($j == $F)
+							{
+								if($this->classStorage[$j]->getSection($this->storage[$i][$j])->getEndTime() > $time[$r+1])
+								{
+									$table .= "\n\t\t<td class=\"mid\">&nbsp;</td>";
+									$filled = true;
+								} else {
+									$table .= "\n\t\t<td class=\"end\">&nbsp;</td>";
+									$F = -1;
+									$filled = true;
+								}
+							}
+						}
+					}
+					
+					// If the cell was not filled, fill it with an empty cell.
+					if(!$filled)
+					{
+						$table .= "\n\t\t<td class=\"none\">&nbsp;</td>";
+					}
+					$filled = false;
+
+					// End of row
+					$table .= "\n\t</tr>";
+				}
+
+				// End of table
+				$table .= "</table></div>";
+			}
+
+			echo $header . $table . $footer;   
+		} else {
+			echo '<html><body><p>There are no possible schedules. Please try again.</p></body></html>';
+		}
+	}
+
+	//--------------------------------------------------
+	// Changes the title of the page.
+	//--------------------------------------------------
+	function changeTitle($t)
+	{
+		$this->title = $t;
+	}
+
+	//--------------------------------------------------
+	// Make the time "pretty."
+	//--------------------------------------------------
+	function prettyTime($t){
+		if($t > 1259)
+		{
+			$t = ($t-1200);
+			return substr($t, 0, strlen($t)-2) . ":" . substr($t, strlen($t)-2, strlen($t)) . " PM";
+		} else {
+			return substr($t, 0, strlen($t)-2) . ":" . substr($t, strlen($t)-2, strlen($t)) . " AM";
+		}
+	}
+
+}
+
+?>
\ No newline at end of file
diff --git a/class.section.php b/class.section.php
new file mode 100644
--- /dev/null
+++ b/class.section.php
@@ -0,0 +1,151 @@
+<?php
+
+include_once 'errors.php';
+
+//--------------------------------------------------
+// class.section.php  Author:Nathan Gelderloos
+//
+// Represents a section of a class.
+//--------------------------------------------------
+   
+class Section {
+
+   private $letter;	// Section letter
+   private $prof;	// Professor
+   private $start;	// Start time
+   private $tend;	// End time
+   private $idays;	// Integer version of meeting days
+   private $bdays;	// Boolean array of meeting days
+
+function __construct ($l, $p, $s, $e, $d)
+{
+   $this->letter = $l;
+   $this->prof = $p;
+   $this->start = $s;
+   $this->tend = $e;
+   $this->idays = $d;
+   $this->bdays = $this->setbdays();
+}
+
+function setbdays()
+{
+   $result;
+
+   if($this->idays == 12345)
+      {$result[0] = true; $result[1] = true; $result[2] = true; $result[3] = true; $result[4] = true;}
+
+   if($this->idays == 1234)
+      {$result[0] = true; $result[1] = true; $result[2] = true; $result[3] = true; $result[4] = false;}
+   if($this->idays == 1235)
+      {$result[0] = true; $result[1] = true; $result[2] = true; $result[3] = false; $result[4] = true;}
+   if($this->idays == 1245)
+      {$result[0] = true; $result[1] = true; $result[2] = false; $result[3] = true; $result[4] = true;}
+   if($this->idays == 1345)
+      {$result[0] = true; $result[1] = false; $result[2] = true; $result[3] = true; $result[4] = true;}
+   if($this->idays == 2345)
+      {$result[0] = false; $result[1] = true; $result[2] = true; $result[3] = true; $result[4] = true;}
+
+   if($this->idays == 123)
+      {$result[0] = true; $result[1] = true; $result[2] = true; $result[3] = false; $result[4] = false;}
+   if($this->idays == 124)
+      {$result[0] = true; $result[1] = true; $result[2] = false; $result[3] = true; $result[4] = false;}
+   if($this->idays == 125)
+      {$result[0] = true; $result[1] = true; $result[2] = false; $result[3] = false; $result[4] = true;}
+   if($this->idays == 134)
+      {$result[0] = true; $result[1] = false; $result[2] = true; $result[3] = true; $result[4] = false;}
+   if($this->idays == 135)
+      {$result[0] = true; $result[1] = false; $result[2] = true; $result[3] = false; $result[4] = true;}
+   if($this->idays == 145)
+      {$result[0] = true; $result[1] = false; $result[2] = false; $result[3] = true; $result[4] = true;}
+   if($this->idays == 234)
+      {$result[0] = false; $result[1] = true; $result[2] = true; $result[3] = true; $result[4] = false;}
+   if($this->idays == 235)
+      {$result[0] = false; $result[1] = true; $result[2] = true; $result[3] = false; $result[4] = true;}
+   if($this->idays == 245)
+      {$result[0] = false; $result[1] = true; $result[2] = false; $result[3] = true; $result[4] = true;}
+   if($this->idays == 345)
+      {$result[0] = false; $result[1] = false; $result[2] = true; $result[3] = true; $result[4] = true;}
+
+   if($this->idays == 12)
+      {$result[0] = true; $result[1] = true; $result[2] = false; $result[3] = false; $result[4] = false;}
+   if($this->idays == 13)
+      {$result[0] = true; $result[1] = false; $result[2] = true; $result[3] = false; $result[4] = false;}
+   if($this->idays == 14)
+      {$result[0] = true; $result[1] = false; $result[2] = false; $result[3] = true; $result[4] = false;}
+   if($this->idays == 15)
+      {$result[0] = true; $result[1] = false; $result[2] = false; $result[3] = false; $result[4] = true;}
+   if($this->idays == 23)
+      {$result[0] = false; $result[1] = true; $result[2] = true; $result[3] = false; $result[4] = false;}
+   if($this->idays == 24)
+      {$result[0] = false; $result[1] = true; $result[2] = false; $result[3] = true; $result[4] = false;}
+   if($this->idays == 25)
+      {$result[0] = false; $result[1] = true; $result[2] = false; $result[3] = false; $result[4] = true;}
+   if($this->idays == 34)
+      {$result[0] = false; $result[1] = false; $result[2] = true; $result[3] = true; $result[4] = false;}
+   if($this->idays == 35)
+      {$result[0] = false; $result[1] = false; $result[2] = true; $result[3] = false; $result[4] = true;}
+   if($this->idays == 45)
+      {$result[0] = false; $result[1] = false; $result[2] = false; $result[3] = true; $result[4] = true;}
+      
+   if($this->idays == 1)
+      {$result[0] = true; $result[1] = false; $result[2] = false; $result[3] = false; $result[4] = false;}
+   if($this->idays == 2)
+      {$result[0] = false; $result[1] = true; $result[2] = false; $result[3] = false; $result[4] = false;}
+   if($this->idays == 3)
+      {$result[0] = false; $result[1] = false; $result[2] = true; $result[3] = false; $result[4] = false;}
+   if($this->idays == 4)
+      {$result[0] = false; $result[1] = false; $result[2] = false; $result[3] = true; $result[4] = false;}
+   if($this->idays == 5)
+      {$result[0] = false; $result[1] = false; $result[2] = false; $result[3] = false; $result[4] = true;}
+         
+   return $result;
+}
+
+function getLetter()
+{
+   return $this->letter;
+}
+
+function getProf()
+{
+   return $this->prof;
+}
+
+function getStartTime()
+{
+   return $this->start;
+}
+
+function getEndTime()
+{
+   return $this->tend;
+}
+
+function getM()
+{
+   return $this->bdays[0];
+}
+
+function getTu()
+{
+   return $this->bdays[1];
+}
+
+function getW()
+{
+   return $this->bdays[2];
+}
+
+function getTh()
+{
+   return $this->bdays[3];
+}
+
+function getF()
+{
+   return $this->bdays[4];
+}
+
+}
+
+?>
\ No newline at end of file
diff --git a/displayTables.js b/displayTables.js
new file mode 100644
--- /dev/null
+++ b/displayTables.js
@@ -0,0 +1,9 @@
+$(document).ready(function() {
+
+function hideAllButFirst(){
+	jQuery('.week').hide();
+};
+
+hideAllButFirst();
+
+}
\ No newline at end of file
diff --git a/effects.js b/effects.js
new file mode 100644
--- /dev/null
+++ b/effects.js
@@ -0,0 +1,975 @@
+// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// Contributors:
+//  Justin Palmer (http://encytemedia.com/)
+//  Mark Pilgrim (http://diveintomark.org/)
+//  Martin Bialasinki
+// 
+// See scriptaculous.js for full license.  
+
+// converts rgb() and #xxx to #xxxxxx format,  
+// returns self (or first argument) if not convertable  
+String.prototype.parseColor = function() {  
+  var color = '#';  
+  if(this.slice(0,4) == 'rgb(') {  
+    var cols = this.slice(4,this.length-1).split(',');  
+    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
+  } else {  
+    if(this.slice(0,1) == '#') {  
+      if(this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
+      if(this.length==7) color = this.toLowerCase();  
+    }  
+  }  
+  return(color.length==7 ? color : (arguments[0] || this));  
+}
+
+/*--------------------------------------------------------------------------*/
+
+Element.collectTextNodes = function(element) {  
+  return $A($(element).childNodes).collect( function(node) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
+  }).flatten().join('');
+}
+
+Element.collectTextNodesIgnoreClass = function(element, className) {  
+  return $A($(element).childNodes).collect( function(node) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
+        Element.collectTextNodesIgnoreClass(node, className) : ''));
+  }).flatten().join('');
+}
+
+Element.setContentZoom = function(element, percent) {
+  element = $(element);  
+  Element.setStyle(element, {fontSize: (percent/100) + 'em'});   
+  if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+}
+
+Element.getOpacity = function(element){  
+  var opacity;
+  if (opacity = Element.getStyle(element, 'opacity'))  
+    return parseFloat(opacity);  
+  if (opacity = (Element.getStyle(element, 'filter') || '').match(/alpha\(opacity=(.*)\)/))  
+    if(opacity[1]) return parseFloat(opacity[1]) / 100;  
+  return 1.0;  
+}
+
+Element.setOpacity = function(element, value){  
+  element= $(element);  
+  if (value == 1){
+    Element.setStyle(element, { opacity: 
+      (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
+      0.999999 : 1.0 });
+    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
+      Element.setStyle(element, {filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
+  } else {  
+    if(value < 0.00001) value = 0;  
+    Element.setStyle(element, {opacity: value});
+    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
+     Element.setStyle(element, 
+       { filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +
+                 'alpha(opacity='+value*100+')' });  
+  }
+}  
+ 
+Element.getInlineOpacity = function(element){  
+  return $(element).style.opacity || '';
+}  
+
+Element.childrenWithClassName = function(element, className, findFirst) {
+  var classNameRegExp = new RegExp("(^|\\s)" + className + "(\\s|$)");
+  var results = $A($(element).getElementsByTagName('*'))[findFirst ? 'detect' : 'select']( function(c) { 
+    return (c.className && c.className.match(classNameRegExp));
+  });
+  if(!results) results = [];
+  return results;
+}
+
+Element.forceRerendering = function(element) {
+  try {
+    element = $(element);
+    var n = document.createTextNode(' ');
+    element.appendChild(n);
+    element.removeChild(n);
+  } catch(e) { }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Array.prototype.call = function() {
+  var args = arguments;
+  this.each(function(f){ f.apply(this, args) });
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Effect = {
+  _elementDoesNotExistError: {
+    name: 'ElementDoesNotExistError',
+    message: 'The specified DOM element does not exist, but is required for this effect to operate'
+  },
+  tagifyText: function(element) {
+    if(typeof Builder == 'undefined')
+      throw("Effect.tagifyText requires including script.aculo.us' builder.js library");
+      
+    var tagifyStyle = 'position:relative';
+    if(/MSIE/.test(navigator.userAgent) && !window.opera) tagifyStyle += ';zoom:1';
+    element = $(element);
+    $A(element.childNodes).each( function(child) {
+      if(child.nodeType==3) {
+        child.nodeValue.toArray().each( function(character) {
+          element.insertBefore(
+            Builder.node('span',{style: tagifyStyle},
+              character == ' ' ? String.fromCharCode(160) : character), 
+              child);
+        });
+        Element.remove(child);
+      }
+    });
+  },
+  multiple: function(element, effect) {
+    var elements;
+    if(((typeof element == 'object') || 
+        (typeof element == 'function')) && 
+       (element.length))
+      elements = element;
+    else
+      elements = $(element).childNodes;
+      
+    var options = Object.extend({
+      speed: 0.1,
+      delay: 0.0
+    }, arguments[2] || {});
+    var masterDelay = options.delay;
+
+    $A(elements).each( function(element, index) {
+      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
+    });
+  },
+  PAIRS: {
+    'slide':  ['SlideDown','SlideUp'],
+    'blind':  ['BlindDown','BlindUp'],
+    'appear': ['Appear','Fade']
+  },
+  toggle: function(element, effect) {
+    element = $(element);
+    effect = (effect || 'appear').toLowerCase();
+    var options = Object.extend({
+      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
+    }, arguments[2] || {});
+    Effect[element.visible() ? 
+      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
+  }
+};
+
+var Effect2 = Effect; // deprecated
+
+/* ------------- transitions ------------- */
+
+Effect.Transitions = {}
+
+Effect.Transitions.linear = Prototype.K;
+
+Effect.Transitions.sinoidal = function(pos) {
+  return (-Math.cos(pos*Math.PI)/2) + 0.5;
+}
+Effect.Transitions.reverse  = function(pos) {
+  return 1-pos;
+}
+Effect.Transitions.flicker = function(pos) {
+  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
+}
+Effect.Transitions.wobble = function(pos) {
+  return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
+}
+Effect.Transitions.pulse = function(pos) {
+  return (Math.floor(pos*10) % 2 == 0 ? 
+    (pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));
+}
+Effect.Transitions.none = function(pos) {
+  return 0;
+}
+Effect.Transitions.full = function(pos) {
+  return 1;
+}
+
+/* ------------- core effects ------------- */
+
+Effect.ScopedQueue = Class.create();
+Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
+  initialize: function() {
+    this.effects  = [];
+    this.interval = null;
+  },
+  _each: function(iterator) {
+    this.effects._each(iterator);
+  },
+  add: function(effect) {
+    var timestamp = new Date().getTime();
+    
+    var position = (typeof effect.options.queue == 'string') ? 
+      effect.options.queue : effect.options.queue.position;
+    
+    switch(position) {
+      case 'front':
+        // move unstarted effects after this effect  
+        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
+            e.startOn  += effect.finishOn;
+            e.finishOn += effect.finishOn;
+          });
+        break;
+      case 'end':
+        // start effect after last queued effect has finished
+        timestamp = this.effects.pluck('finishOn').max() || timestamp;
+        break;
+    }
+    
+    effect.startOn  += timestamp;
+    effect.finishOn += timestamp;
+
+    if(!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
+      this.effects.push(effect);
+    
+    if(!this.interval) 
+      this.interval = setInterval(this.loop.bind(this), 40);
+  },
+  remove: function(effect) {
+    this.effects = this.effects.reject(function(e) { return e==effect });
+    if(this.effects.length == 0) {
+      clearInterval(this.interval);
+      this.interval = null;
+    }
+  },
+  loop: function() {
+    var timePos = new Date().getTime();
+    this.effects.invoke('loop', timePos);
+  }
+});
+
+Effect.Queues = {
+  instances: $H(),
+  get: function(queueName) {
+    if(typeof queueName != 'string') return queueName;
+    
+    if(!this.instances[queueName])
+      this.instances[queueName] = new Effect.ScopedQueue();
+      
+    return this.instances[queueName];
+  }
+}
+Effect.Queue = Effect.Queues.get('global');
+
+Effect.DefaultOptions = {
+  transition: Effect.Transitions.sinoidal,
+  duration:   1.0,   // seconds
+  fps:        25.0,  // max. 25fps due to Effect.Queue implementation
+  sync:       false, // true for combining
+  from:       0.0,
+  to:         1.0,
+  delay:      0.0,
+  queue:      'parallel'
+}
+
+Effect.Base = function() {};
+Effect.Base.prototype = {
+  position: null,
+  start: function(options) {
+    this.options      = Object.extend(Object.extend({},Effect.DefaultOptions), options || {});
+    this.currentFrame = 0;
+    this.state        = 'idle';
+    this.startOn      = this.options.delay*1000;
+    this.finishOn     = this.startOn + (this.options.duration*1000);
+    this.event('beforeStart');
+    if(!this.options.sync)
+      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+        'global' : this.options.queue.scope).add(this);
+  },
+  loop: function(timePos) {
+    if(timePos >= this.startOn) {
+      if(timePos >= this.finishOn) {
+        this.render(1.0);
+        this.cancel();
+        this.event('beforeFinish');
+        if(this.finish) this.finish(); 
+        this.event('afterFinish');
+        return;  
+      }
+      var pos   = (timePos - this.startOn) / (this.finishOn - this.startOn);
+      var frame = Math.round(pos * this.options.fps * this.options.duration);
+      if(frame > this.currentFrame) {
+        this.render(pos);
+        this.currentFrame = frame;
+      }
+    }
+  },
+  render: function(pos) {
+    if(this.state == 'idle') {
+      this.state = 'running';
+      this.event('beforeSetup');
+      if(this.setup) this.setup();
+      this.event('afterSetup');
+    }
+    if(this.state == 'running') {
+      if(this.options.transition) pos = this.options.transition(pos);
+      pos *= (this.options.to-this.options.from);
+      pos += this.options.from;
+      this.position = pos;
+      this.event('beforeUpdate');
+      if(this.update) this.update(pos);
+      this.event('afterUpdate');
+    }
+  },
+  cancel: function() {
+    if(!this.options.sync)
+      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+        'global' : this.options.queue.scope).remove(this);
+    this.state = 'finished';
+  },
+  event: function(eventName) {
+    if(this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
+    if(this.options[eventName]) this.options[eventName](this);
+  },
+  inspect: function() {
+    return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
+  }
+}
+
+Effect.Parallel = Class.create();
+Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
+  initialize: function(effects) {
+    this.effects = effects || [];
+    this.start(arguments[1]);
+  },
+  update: function(position) {
+    this.effects.invoke('render', position);
+  },
+  finish: function(position) {
+    this.effects.each( function(effect) {
+      effect.render(1.0);
+      effect.cancel();
+      effect.event('beforeFinish');
+      if(effect.finish) effect.finish(position);
+      effect.event('afterFinish');
+    });
+  }
+});
+
+Effect.Opacity = Class.create();
+Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    // make this work on IE on elements without 'layout'
+    if(/MSIE/.test(navigator.userAgent) && !window.opera && (!this.element.currentStyle.hasLayout))
+      this.element.setStyle({zoom: 1});
+    var options = Object.extend({
+      from: this.element.getOpacity() || 0.0,
+      to:   1.0
+    }, arguments[1] || {});
+    this.start(options);
+  },
+  update: function(position) {
+    this.element.setOpacity(position);
+  }
+});
+
+Effect.Move = Class.create();
+Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      x:    0,
+      y:    0,
+      mode: 'relative'
+    }, arguments[1] || {});
+    this.start(options);
+  },
+  setup: function() {
+    // Bug in Opera: Opera returns the "real" position of a static element or
+    // relative element that does not have top/left explicitly set.
+    // ==> Always set top and left for position relative elements in your stylesheets 
+    // (to 0 if you do not need them) 
+    this.element.makePositioned();
+    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
+    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
+    if(this.options.mode == 'absolute') {
+      // absolute movement, so we need to calc deltaX and deltaY
+      this.options.x = this.options.x - this.originalLeft;
+      this.options.y = this.options.y - this.originalTop;
+    }
+  },
+  update: function(position) {
+    this.element.setStyle({
+      left: Math.round(this.options.x  * position + this.originalLeft) + 'px',
+      top:  Math.round(this.options.y  * position + this.originalTop)  + 'px'
+    });
+  }
+});
+
+// for backwards compatibility
+Effect.MoveBy = function(element, toTop, toLeft) {
+  return new Effect.Move(element, 
+    Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
+};
+
+Effect.Scale = Class.create();
+Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
+  initialize: function(element, percent) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      scaleX: true,
+      scaleY: true,
+      scaleContent: true,
+      scaleFromCenter: false,
+      scaleMode: 'box',        // 'box' or 'contents' or {} with provided values
+      scaleFrom: 100.0,
+      scaleTo:   percent
+    }, arguments[2] || {});
+    this.start(options);
+  },
+  setup: function() {
+    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
+    this.elementPositioning = this.element.getStyle('position');
+    
+    this.originalStyle = {};
+    ['top','left','width','height','fontSize'].each( function(k) {
+      this.originalStyle[k] = this.element.style[k];
+    }.bind(this));
+      
+    this.originalTop  = this.element.offsetTop;
+    this.originalLeft = this.element.offsetLeft;
+    
+    var fontSize = this.element.getStyle('font-size') || '100%';
+    ['em','px','%','pt'].each( function(fontSizeType) {
+      if(fontSize.indexOf(fontSizeType)>0) {
+        this.fontSize     = parseFloat(fontSize);
+        this.fontSizeType = fontSizeType;
+      }
+    }.bind(this));
+    
+    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
+    
+    this.dims = null;
+    if(this.options.scaleMode=='box')
+      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
+    if(/^content/.test(this.options.scaleMode))
+      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
+    if(!this.dims)
+      this.dims = [this.options.scaleMode.originalHeight,
+                   this.options.scaleMode.originalWidth];
+  },
+  update: function(position) {
+    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
+    if(this.options.scaleContent && this.fontSize)
+      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
+    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
+  },
+  finish: function(position) {
+    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
+  },
+  setDimensions: function(height, width) {
+    var d = {};
+    if(this.options.scaleX) d.width = Math.round(width) + 'px';
+    if(this.options.scaleY) d.height = Math.round(height) + 'px';
+    if(this.options.scaleFromCenter) {
+      var topd  = (height - this.dims[0])/2;
+      var leftd = (width  - this.dims[1])/2;
+      if(this.elementPositioning == 'absolute') {
+        if(this.options.scaleY) d.top = this.originalTop-topd + 'px';
+        if(this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
+      } else {
+        if(this.options.scaleY) d.top = -topd + 'px';
+        if(this.options.scaleX) d.left = -leftd + 'px';
+      }
+    }
+    this.element.setStyle(d);
+  }
+});
+
+Effect.Highlight = Class.create();
+Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    if(!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
+    this.start(options);
+  },
+  setup: function() {
+    // Prevent executing on elements not in the layout flow
+    if(this.element.getStyle('display')=='none') { this.cancel(); return; }
+    // Disable background image during the effect
+    this.oldStyle = {
+      backgroundImage: this.element.getStyle('background-image') };
+    this.element.setStyle({backgroundImage: 'none'});
+    if(!this.options.endcolor)
+      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
+    if(!this.options.restorecolor)
+      this.options.restorecolor = this.element.getStyle('background-color');
+    // init color calculations
+    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
+    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
+  },
+  update: function(position) {
+    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
+      return m+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });
+  },
+  finish: function() {
+    this.element.setStyle(Object.extend(this.oldStyle, {
+      backgroundColor: this.options.restorecolor
+    }));
+  }
+});
+
+Effect.ScrollTo = Class.create();
+Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    this.start(arguments[1] || {});
+  },
+  setup: function() {
+    Position.prepare();
+    var offsets = Position.cumulativeOffset(this.element);
+    if(this.options.offset) offsets[1] += this.options.offset;
+    var max = window.innerHeight ? 
+      window.height - window.innerHeight :
+      document.body.scrollHeight - 
+        (document.documentElement.clientHeight ? 
+          document.documentElement.clientHeight : document.body.clientHeight);
+    this.scrollStart = Position.deltaY;
+    this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
+  },
+  update: function(position) {
+    Position.prepare();
+    window.scrollTo(Position.deltaX, 
+      this.scrollStart + (position*this.delta));
+  }
+});
+
+/* ------------- combination effects ------------- */
+
+Effect.Fade = function(element) {
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  var options = Object.extend({
+  from: element.getOpacity() || 1.0,
+  to:   0.0,
+  afterFinishInternal: function(effect) { 
+    if(effect.options.to!=0) return;
+    effect.element.hide();
+    effect.element.setStyle({opacity: oldOpacity}); 
+  }}, arguments[1] || {});
+  return new Effect.Opacity(element,options);
+}
+
+Effect.Appear = function(element) {
+  element = $(element);
+  var options = Object.extend({
+  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
+  to:   1.0,
+  // force Safari to render floated elements properly
+  afterFinishInternal: function(effect) {
+    effect.element.forceRerendering();
+  },
+  beforeSetup: function(effect) {
+    effect.element.setOpacity(effect.options.from);
+    effect.element.show(); 
+  }}, arguments[1] || {});
+  return new Effect.Opacity(element,options);
+}
+
+Effect.Puff = function(element) {
+  element = $(element);
+  var oldStyle = { 
+    opacity: element.getInlineOpacity(), 
+    position: element.getStyle('position'),
+    top:  element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height
+  };
+  return new Effect.Parallel(
+   [ new Effect.Scale(element, 200, 
+      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
+     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
+     Object.extend({ duration: 1.0, 
+      beforeSetupInternal: function(effect) {
+        Position.absolutize(effect.effects[0].element)
+      },
+      afterFinishInternal: function(effect) {
+         effect.effects[0].element.hide();
+         effect.effects[0].element.setStyle(oldStyle); }
+     }, arguments[1] || {})
+   );
+}
+
+Effect.BlindUp = function(element) {
+  element = $(element);
+  element.makeClipping();
+  return new Effect.Scale(element, 0,
+    Object.extend({ scaleContent: false, 
+      scaleX: false, 
+      restoreAfterFinish: true,
+      afterFinishInternal: function(effect) {
+        effect.element.hide();
+        effect.element.undoClipping();
+      } 
+    }, arguments[1] || {})
+  );
+}
+
+Effect.BlindDown = function(element) {
+  element = $(element);
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false,
+    scaleFrom: 0,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makeClipping();
+      effect.element.setStyle({height: '0px'});
+      effect.element.show(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping();
+    }
+  }, arguments[1] || {}));
+}
+
+Effect.SwitchOff = function(element) {
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  return new Effect.Appear(element, Object.extend({
+    duration: 0.4,
+    from: 0,
+    transition: Effect.Transitions.flicker,
+    afterFinishInternal: function(effect) {
+      new Effect.Scale(effect.element, 1, { 
+        duration: 0.3, scaleFromCenter: true,
+        scaleX: false, scaleContent: false, restoreAfterFinish: true,
+        beforeSetup: function(effect) { 
+          effect.element.makePositioned();
+          effect.element.makeClipping();
+        },
+        afterFinishInternal: function(effect) {
+          effect.element.hide();
+          effect.element.undoClipping();
+          effect.element.undoPositioned();
+          effect.element.setStyle({opacity: oldOpacity});
+        }
+      })
+    }
+  }, arguments[1] || {}));
+}
+
+Effect.DropOut = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.getStyle('top'),
+    left: element.getStyle('left'),
+    opacity: element.getInlineOpacity() };
+  return new Effect.Parallel(
+    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
+      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
+    Object.extend(
+      { duration: 0.5,
+        beforeSetup: function(effect) {
+          effect.effects[0].element.makePositioned(); 
+        },
+        afterFinishInternal: function(effect) {
+          effect.effects[0].element.hide();
+          effect.effects[0].element.undoPositioned();
+          effect.effects[0].element.setStyle(oldStyle);
+        } 
+      }, arguments[1] || {}));
+}
+
+Effect.Shake = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.getStyle('top'),
+    left: element.getStyle('left') };
+    return new Effect.Move(element, 
+      { x:  20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
+        effect.element.undoPositioned();
+        effect.element.setStyle(oldStyle);
+  }}) }}) }}) }}) }}) }});
+}
+
+Effect.SlideDown = function(element) {
+  element = $(element);
+  element.cleanWhitespace();
+  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
+  var oldInnerBottom = $(element.firstChild).getStyle('bottom');
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false, 
+    scaleFrom: window.opera ? 0 : 1,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makePositioned();
+      effect.element.firstChild.makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping();
+      effect.element.setStyle({height: '0px'});
+      effect.element.show(); },
+    afterUpdateInternal: function(effect) {
+      effect.element.firstChild.setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
+    },
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping(); 
+      // IE will crash if child is undoPositioned first
+      if(/MSIE/.test(navigator.userAgent) && !window.opera){
+        effect.element.undoPositioned();
+        effect.element.firstChild.undoPositioned();
+      }else{
+        effect.element.firstChild.undoPositioned();
+        effect.element.undoPositioned();
+      }
+      effect.element.firstChild.setStyle({bottom: oldInnerBottom}); }
+    }, arguments[1] || {})
+  );
+}
+
+Effect.SlideUp = function(element) {
+  element = $(element);
+  element.cleanWhitespace();
+  var oldInnerBottom = $(element.firstChild).getStyle('bottom');
+  return new Effect.Scale(element, window.opera ? 0 : 1,
+   Object.extend({ scaleContent: false, 
+    scaleX: false, 
+    scaleMode: 'box',
+    scaleFrom: 100,
+    restoreAfterFinish: true,
+    beforeStartInternal: function(effect) {
+      effect.element.makePositioned();
+      effect.element.firstChild.makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping();
+      effect.element.show(); },  
+    afterUpdateInternal: function(effect) {
+      effect.element.firstChild.setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' }); },
+    afterFinishInternal: function(effect) {
+      effect.element.hide();
+      effect.element.undoClipping();
+      effect.element.firstChild.undoPositioned();
+      effect.element.undoPositioned();
+      effect.element.setStyle({bottom: oldInnerBottom}); }
+   }, arguments[1] || {})
+  );
+}
+
+// Bug in opera makes the TD containing this element expand for a instance after finish 
+Effect.Squish = function(element) {
+  return new Effect.Scale(element, window.opera ? 1 : 0, 
+    { restoreAfterFinish: true,
+      beforeSetup: function(effect) {
+        effect.element.makeClipping(effect.element); },  
+      afterFinishInternal: function(effect) {
+        effect.element.hide(effect.element); 
+        effect.element.undoClipping(effect.element); }
+  });
+}
+
+Effect.Grow = function(element) {
+  element = $(element);
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.full
+  }, arguments[1] || {});
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();    
+  var initialMoveX, initialMoveY;
+  var moveX, moveY;
+  
+  switch (options.direction) {
+    case 'top-left':
+      initialMoveX = initialMoveY = moveX = moveY = 0; 
+      break;
+    case 'top-right':
+      initialMoveX = dims.width;
+      initialMoveY = moveY = 0;
+      moveX = -dims.width;
+      break;
+    case 'bottom-left':
+      initialMoveX = moveX = 0;
+      initialMoveY = dims.height;
+      moveY = -dims.height;
+      break;
+    case 'bottom-right':
+      initialMoveX = dims.width;
+      initialMoveY = dims.height;
+      moveX = -dims.width;
+      moveY = -dims.height;
+      break;
+    case 'center':
+      initialMoveX = dims.width / 2;
+      initialMoveY = dims.height / 2;
+      moveX = -dims.width / 2;
+      moveY = -dims.height / 2;
+      break;
+  }
+  
+  return new Effect.Move(element, {
+    x: initialMoveX,
+    y: initialMoveY,
+    duration: 0.01, 
+    beforeSetup: function(effect) {
+      effect.element.hide();
+      effect.element.makeClipping();
+      effect.element.makePositioned();
+    },
+    afterFinishInternal: function(effect) {
+      new Effect.Parallel(
+        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
+          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
+          new Effect.Scale(effect.element, 100, {
+            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
+            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
+        ], Object.extend({
+             beforeSetup: function(effect) {
+               effect.effects[0].element.setStyle({height: '0px'});
+               effect.effects[0].element.show(); 
+             },
+             afterFinishInternal: function(effect) {
+               effect.effects[0].element.undoClipping();
+               effect.effects[0].element.undoPositioned();
+               effect.effects[0].element.setStyle(oldStyle); 
+             }
+           }, options)
+      )
+    }
+  });
+}
+
+Effect.Shrink = function(element) {
+  element = $(element);
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.none
+  }, arguments[1] || {});
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();
+  var moveX, moveY;
+  
+  switch (options.direction) {
+    case 'top-left':
+      moveX = moveY = 0;
+      break;
+    case 'top-right':
+      moveX = dims.width;
+      moveY = 0;
+      break;
+    case 'bottom-left':
+      moveX = 0;
+      moveY = dims.height;
+      break;
+    case 'bottom-right':
+      moveX = dims.width;
+      moveY = dims.height;
+      break;
+    case 'center':  
+      moveX = dims.width / 2;
+      moveY = dims.height / 2;
+      break;
+  }
+  
+  return new Effect.Parallel(
+    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
+      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
+      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
+    ], Object.extend({            
+         beforeStartInternal: function(effect) {
+           effect.effects[0].element.makePositioned();
+           effect.effects[0].element.makeClipping(); },
+         afterFinishInternal: function(effect) {
+           effect.effects[0].element.hide();
+           effect.effects[0].element.undoClipping();
+           effect.effects[0].element.undoPositioned();
+           effect.effects[0].element.setStyle(oldStyle); }
+       }, options)
+  );
+}
+
+Effect.Pulsate = function(element) {
+  element = $(element);
+  var options    = arguments[1] || {};
+  var oldOpacity = element.getInlineOpacity();
+  var transition = options.transition || Effect.Transitions.sinoidal;
+  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };
+  reverser.bind(transition);
+  return new Effect.Opacity(element, 
+    Object.extend(Object.extend({  duration: 3.0, from: 0,
+      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
+    }, options), {transition: reverser}));
+}
+
+Effect.Fold = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height };
+  Element.makeClipping(element);
+  return new Effect.Scale(element, 5, Object.extend({   
+    scaleContent: false,
+    scaleX: false,
+    afterFinishInternal: function(effect) {
+    new Effect.Scale(element, 1, { 
+      scaleContent: false, 
+      scaleY: false,
+      afterFinishInternal: function(effect) {
+        effect.element.hide();
+        effect.element.undoClipping(); 
+        effect.element.setStyle(oldStyle);
+      } });
+  }}, arguments[1] || {}));
+};
+
+['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
+ 'collectTextNodes','collectTextNodesIgnoreClass','childrenWithClassName'].each( 
+  function(f) { Element.Methods[f] = Element[f]; }
+);
+
+Element.Methods.visualEffect = function(element, effect, options) {
+  s = effect.gsub(/_/, '-').camelize();
+  effect_class = s.charAt(0).toUpperCase() + s.substring(1);
+  new Effect[effect_class](element, options);
+  return $(element);
+};
+
+Element.addMethods();
\ No newline at end of file
diff --git a/errors.php b/errors.php
new file mode 100644
--- /dev/null
+++ b/errors.php
@@ -0,0 +1,8 @@
+<?php
+
+#ini_set('display_errors', 1); 
+# ini_set('log_errors', 1); 
+# ini_set('error_log', '/home/nathang/public_html/scheduler/phperrors.log'); 
+# error_reporting(E_ALL);
+
+?>
diff --git a/glider.css b/glider.css
new file mode 100644
--- /dev/null
+++ b/glider.css
@@ -0,0 +1,56 @@
+div.scroller { 
+	/* modify width and height of scrolling section if necessary	*/		
+	width: 626px; 
+	/* height: 300px;*/
+	overflow: hidden;
+	border:0;
+	padding:0;
+	margin:0;
+//OLD:	margin-left: -23px;
+	}
+	div.scroller div.section {
+		/* modify width and height of each section as needed (should match the size of the scroller window)	*/		
+		width:626px;
+		/* height:300px; */
+		overflow:hidden;
+		float:left;
+		padding:0;		
+		}
+//OLD:	img.header {
+//OLD:		padding-top: 15px;
+//OLD:		margin-top:-5px;
+//OLD:	 }
+	div.scroller div.section div.txt {
+		padding: 1em;
+	}
+	div.scroller div.scontent {
+		width: 50000px;
+		}
+.controls {
+//OLD:text-align: center;
+text-align: left;
+margin-top: 10px;
+margin-bottom: 2px;
+}
+.controls a{
+  -moz-border-radius-topright: 10px;
+  -moz-border-radius-topleft: 10px;
+  text-decoration: none;
+  background: rgba(152,1,1,0.9);
+  padding: 2px;
+//OLD:  margin-left: 3px;
+//OLD:  margin-right: 3px;
+}
+.controls a:link{
+	color: rgba(255,255,255,1);
+}
+.controls a:visited{
+	color: rgba(255,255,255,1);
+}
+.controls a:hover{
+	background: rgba(255,255,255,1);
+	color: rgba(152,1,1,0.9);
+}
+.controls a:active{
+	color: rgba(200,200,200,1);
+}
\ No newline at end of file
diff --git a/glider.js b/glider.js
new file mode 100644
--- /dev/null
+++ b/glider.js
@@ -0,0 +1,135 @@
+/**
+ * @author Bruno Bornsztein <bruno@missingmethod.com>
+ * @copyright 2007 Curbly LLC
+ * @package Glider
+ * @license MIT
+ * @url http://www.missingmethod.com/projects/glider/
+ * @version 0.0.3
+ * @dependencies prototype.js 1.5.1+, effects.js
+ */
+
+/*  Thanks to Andrew Dupont for refactoring help and code cleanup - http://andrewdupont.net/  */
+
+Glider = Class.create();
+Object.extend(Object.extend(Glider.prototype, Abstract.prototype), {
+	initialize: function(wrapper, options){
+	    this.scrolling  = false;
+	    this.wrapper    = $(wrapper);
+	    this.scroller   = this.wrapper.down('div.scroller');
+	    this.sections   = this.wrapper.getElementsBySelector('div.section');
+	    this.options    = Object.extend({ duration: 1.0, frequency: 3 }, options || {});
+
+	    this.sections.each( function(section, index) {
+	      section._index = index;
+	    });    
+
+	    this.events = {
+	      click: this.click.bind(this)
+	    };
+
+	    this.addObservers();
+			if(this.options.initialSection) this.moveTo(this.options.initialSection, this.scroller, { duration:this.options.duration });  // initialSection should be the id of the section you want to show up on load
+			if(this.options.autoGlide) this.start();
+	  },
+	
+  addObservers: function() {
+    var controls = this.wrapper.getElementsBySelector('div.controls a');
+    controls.invoke('observe', 'click', this.events.click);
+  },	
+
+  click: function(event) {
+		this.stop();
+    var element = Event.findElement(event, 'a');
+    if (this.scrolling) this.scrolling.cancel();
+    
+    this.moveTo(element.href.split("#")[1], this.scroller, { duration:this.options.duration });     
+    Event.stop(event);
+  },
+
+	moveTo: function(element, container, options){
+			this.current = $(element);
+
+			Position.prepare();
+	    var containerOffset = Position.cumulativeOffset(container),
+	     elementOffset = Position.cumulativeOffset($(element));
+
+		  this.scrolling 	= new Effect.SmoothScroll(container, 
+				{duration:options.duration, x:(elementOffset[0]-containerOffset[0]), y:(elementOffset[1]-containerOffset[1])});
+		  return false;
+		},
+		
+  next: function(){
+    if (this.current) {
+      var currentIndex = this.current._index;
+      var nextIndex = (this.sections.length - 1 == currentIndex) ? 0 : currentIndex + 1;      
+    } else var nextIndex = 1;
+
+    this.moveTo(this.sections[nextIndex], this.scroller, { 
+      duration: this.options.duration
+    });
+  },
+	
+  previous: function(){
+    if (this.current) {
+      var currentIndex = this.current._index;
+      var prevIndex = (currentIndex == 0) ? this.sections.length - 1 : 
+       currentIndex - 1;
+    } else var prevIndex = this.sections.length - 1;
+    
+    this.moveTo(this.sections[prevIndex], this.scroller, { 
+      duration: this.options.duration
+    });
+  },
+
+	stop: function()
+	{
+		clearTimeout(this.timer);
+	},
+	
+	start: function()
+	{
+		this.periodicallyUpdate();
+	},
+		
+	periodicallyUpdate: function()
+	{ 
+		if (this.timer != null) {
+			clearTimeout(this.timer);
+			this.next();
+		}
+		this.timer = setTimeout(this.periodicallyUpdate.bind(this), this.options.frequency*1000);
+	}
+
+});
+
+Effect.SmoothScroll = Class.create();
+Object.extend(Object.extend(Effect.SmoothScroll.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    var options = Object.extend({
+      x:    0,
+      y:    0,
+      mode: 'absolute'
+    } , arguments[1] || {}  );
+    this.start(options);
+  },
+  setup: function() {
+    if (this.options.continuous && !this.element._ext ) {
+      this.element.cleanWhitespace();
+      this.element._ext=true;
+      this.element.appendChild(this.element.firstChild);
+    }
+   
+    this.originalLeft=this.element.scrollLeft;
+    this.originalTop=this.element.scrollTop;
+   
+    if(this.options.mode == 'absolute') {
+      this.options.x -= this.originalLeft;
+      this.options.y -= this.originalTop;
+    } 
+  },
+  update: function(position) {   
+    this.element.scrollLeft = this.options.x * position + this.originalLeft;
+    this.element.scrollTop  = this.options.y * position + this.originalTop;
+  }
+});
\ No newline at end of file
diff --git a/index.php b/index.php
new file mode 100644
--- /dev/null
+++ b/index.php
@@ -0,0 +1,67 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+<head>
+<title>Scheduler</title>
+
+<link rel="stylesheet" href="styles/general.css" type="text/css" media="screen" charset="utf-8">
+
+<style type="text/css">
+/*  body {
+    width: 80%;
+    margin:auto;
+    font-family: sans-serif;
+  }
+  #header {
+    text-align: left;
+    background: rgb(220,220,220); /* IE fallback */
+    background: rgba(200,200,200, .3);  
+  }
+  #footer {
+    text-align: right;
+    background: rgb(220,220,220); /* IE fallback */
+    background: rgba(200,200,200, .3); 
+  }*/
+  .error {
+    color: #F00; /* For validation errors */
+  } 
+  .error p {
+    padding: 0;
+    margin: 0;
+    font-size: .7em;
+  }
+  td.center {
+    text-align:center;
+  }
+  .section:nth-child(even) {
+    background: #DDDDDD;
+  }
+  .none {
+    background: #fff;
+  }
+  .class {
+    background: #99FF99;
+  }
+  #classage {
+    float:left;
+  }
+  .paddingtop {
+    padding: .5em;
+    padding-top: .8em;
+  }
+</style>
+</head>
+<body>
+<div id="header">
+<h1><em>SlatePermutate</em> -  Scheduler</h1>
+</div>
+<div id="content">
+<h3>Find the schedule that works for you!</h3>
+<p>View a <a href="http://protofusion.org/~nathang/scheduler/schedulecreator.php">demo output</a> or get <a href="http://protofusion.org/~nathang/scheduler/input.php">started on your own</a>.</p>
+
+</div>
+<div id="footer">
+<h5>&copy; <?php echo Date("Y"); ?> Nathan Gelderloos<br />
+with special thanks to <a href="http://ethanzonca.com">Ethan Zonca</a></h5>
+</div>
+</body>
+</html>
\ No newline at end of file
diff --git a/input.php b/input.php
new file mode 100644
--- /dev/null
+++ b/input.php
@@ -0,0 +1,280 @@
+<?php session_start() ?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+<head>
+<title>Scheduler</title>
+<style type="text/css">
+  body {
+    width: 80%;
+    margin:auto;
+    font-family: sans-serif;
+  }
+  #header {
+    text-align: left;
+    background: rgb(220,220,220); /* IE fallback */
+    background: rgba(200,200,200, .3);  
+  }
+  #footer {
+    text-align: right;
+    background: rgb(220,220,220); /* IE fallback */
+    background: rgba(200,200,200, .3); 
+  }
+  .error {
+    color: #F00; /* For validation errors */
+  } 
+  .error p {
+    padding: 0;
+    margin: 0;
+    font-size: .7em;
+  }
+  td.center {
+    text-align:center;
+  }
+  .section:nth-child(even) {
+    background: #DDDDDD;
+  }
+  .none {
+    background: #fff;
+  }
+  .class {
+    background: #99FF99;
+  }
+  #classage {
+    float:left;
+  }
+  .paddingtop {
+    padding: .5em;
+    padding-top: .8em;
+  }
+</style>
+<script src="http://www.google.com/jsapi"></script>
+<script type="text/javascript" charset="utf-8">
+  google.load("jquery", "1.3.2");
+  google.load("jqueryui", "1.7.2");
+</script> 
+
+<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.pack.js"></script>
+
+<script type="text/javascript">
+  /* Set all default error messages to this */
+  jQuery.each(jQuery.validator.messages, function(i) {
+    jQuery.validator.messages[i] = "<p class=\"error\">Please fill the field</p>";
+  });
+
+  jQuery.validator.addMethod( 
+    "selectNone", 
+    function(value, element) { 
+      if (element.value == "none") 
+      { 
+        return false; 
+      } 
+      else return true; 
+    }, 
+    "<p class=\"error\">Please select a time</p>" 
+  ); 
+
+/* Doesn't work right now:  */ /*
+	jQuery.validator.addMethod( 
+	  "daysRequired", 
+	  function(value, element) { 
+		var numChecked = 0;
+		jQuery(document).find('.daysRequire').each(function () {
+			jQuery('#scheduleForm').append('<p>Found something!</p>');
+			if(this.value != "none")
+				numChecked++;
+		});
+		jQuery('#scheduleForm').append('<p>Finished each loop, found ' + numChecked + ' checked boxes</p>');
+
+	    if (numChecked >= 1) 
+	    { 
+	      return false; 
+	    } 
+	    else return true; 
+	  }, 
+	  "<p class=\"error\">Please select one or more days!.</p>" 
+	); 
+*/
+
+  jQuery.validator.addClassRules("selectRequired", {
+    selectNone: true
+  });
+  jQuery.validator.addClassRules("daysRequire", {
+    daysRequired: true
+  });
+
+    jQuery(document).ready(function() {
+	//--------------------------------------------------
+	// Validates the form (pre-submission check)
+	//--------------------------------------------------
+	  jQuery('#scheduleForm').validate({
+	    debug: false,
+	  }); 
+
+
+
+      var classNum = 0;
+      var sectionsOfClass = new Array(); // holds number of sections for each class
+
+//---------------------------------------------
+	function getCommonInputs(cnum)
+	{
+	var snum = sectionsOfClass[cnum];
+
+	var result = '<td>\
+		<select name="postData[' + cnum + '][' + snum + '][letter]"><option value="-">-</option><option value="A">A</option><option value="B">B</option>\
+		<option value="C">C</option><option value="D">D</option><option value="E">E</option><option value="F">F</option><option value="G">G</option>\
+		<option value="H">H</option><option value="I">I</option><option value="J">J</option><option value="K">K</option></select></td>\
+		</select></td>\
+		<td><select class="selectRequired" name="postData[' + cnum + '][' + snum + '][start]"><option value="none"></option>\
+		<option value="700">7:00 am</option><option value="730">7:30 am</option>\
+		<option value="800">8:00 am</option><option value="830">8:30 am</option>\
+		<option value="900">9:00 am</option><option value="930">9:30 am</option>\
+		<option value="1000">10:00 am</option><option value="1030">10:30 am</option>\
+		<option value="1100">11:00 am</option><option value="1130">11:30 am</option>\
+		<option value="1200">12:00 am</option><option value="1230">12:30 am</option>\
+		<option value="1300">1:00 pm</option><option value="1330">1:30 pm</option>\
+		<option value="1400">2:00 pm</option><option value="1430">2:30 pm</option>\
+		<option value="1500">3:00 pm</option><option value="1530">3:30 pm</option>\
+		<option value="1600">4:00 pm</option><option value="1630">4:30 pm</option>\
+		<option value="1700">5:00 pm</option><option value="1730">5:30 pm</option>\
+		<option value="1800">6:00 pm</option><option value="1830">6:30 pm</option>\
+		<option value="1900">7:00 pm</option><option value="1930">7:30 pm</option>\
+		<option value="2000">8:00 pm</option><option value="2030">8:30 pm</option>\
+		<option value="2100">9:00 pm</option></select></td>\
+	<td><select class="selectRequired" name="postData[' + cnum + '][' + snum + '][end]"><option value="none"></option>\
+		<option value="720">7:20 am</option><option value="750">7:50 am</option>\
+		<option value="820">8:20 am</option><option value="850">8:50 am</option>\
+		<option value="920">9:20 am</option><option value="950">9:50 am</option>\
+		<option value="1020">10:20 am</option><option value="1050">10:50 am</option>\
+		<option value="1120">11:20 am</option><option value="1150">11:50 am</option>\
+		<option value="1220">12:20 am</option><option value="1250">12:50 pm</option>\
+		<option value="1320">1:20 pm</option><option value="1350">1:50 pm</option>\
+		<option value="1420">2:20 pm</option><option value="1450">2:50 pm</option>\
+		<option value="1520">3:20 pm</option><option value="1550">3:50 pm</option>\
+		<option value="1620">4:20 pm</option><option value="1650">4:50 pm</option>\
+		<option value="1720">5:20 pm</option><option value="1750">5:50 pm</option>\
+		<option value="1820">6:20 pm</option><option value="1850">6:50 pm</option>\
+		<option value="1920">7:20 pm</option><option value="1950">7:50 pm</option>\
+		<option value="2020">8:20 pm</option><option value="2050">8:50 pm</option>\
+		<option value="2120">9:20 pm</option></select></td>\
+	<td><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][0]" value="1" /></td>\
+	<td><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][1]" value="1" /></td>\
+	<td><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][2]" value="1" /></td>\
+	<td><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][3]" value="1" /></td>\
+	<td><input type="checkbox" class="daysRequired" name="postData[' + cnum + '][' + snum + '][days][4]" value="1" /></td>';
+	
+	return result;
+	}
+//---------------------------------------------
+
+
+
+	//--------------------------------------------------
+	// Adds a new class to the input.
+	//--------------------------------------------------
+      function addRow(){
+	sectionsOfClass[classNum] = 0; // This is class 0, initialize at 0
+	jQuery('#jsrows').append('<tr title="' + classNum + '" class="class class' + classNum + '"><td><input type="text" class="required" name="postData[' + classNum + '][name]" /></td>' + getCommonInputs(classNum) + '<td><div class="addSection"><input type="button" value="Add section" /></div></td><td><div class="deleteClass"><input type="button" value="Delete" /></div></td></tr>');
+	classNum++;
+
+      };
+	
+      addRow(); // Add initial row
+
+	//--------------------------------------------------
+	// Adds a new class when the add class button is 
+	// clicked.
+	//--------------------------------------------------
+      jQuery('#classage').click(function() {
+	addRow();
+      });
+
+	//--------------------------------------------------
+	// Deletes the selected class from input.
+	//--------------------------------------------------
+      jQuery('.deleteClass').live('click', function() {
+	jQuery('.class'+ jQuery(this).parent().parent().attr("title")).remove();
+      });
+
+	//--------------------------------------------------
+	// Deletes the selected section from the input.
+	//--------------------------------------------------
+      jQuery('.deleteSection').live('click', function() {
+	sectionsOfClass[jQuery(this).parent().parent().attr("title")]--; // TODO: this only decreases the number of classes, so php should loop until this number of classes is found in the array
+	jQuery(this).parent().parent().remove();
+      });
+
+	//--------------------------------------------------
+	// Adds a section to the selected class.
+	//--------------------------------------------------
+     jQuery('.addSection').live('click', function() {
+	sectionsOfClass[jQuery(this).parent().parent().attr("title")]++; // Increases sectionsOfClass[classNum]
+	jQuery(this).parent().parent().after('<tr class="section class' + jQuery(this).parent().parent().attr("title") + '"><td class="none"></td>' + getCommonInputs(jQuery(this).parent().parent().attr("title")) + '<td></td><td><div class="deleteSection"><input type="button" value="Delete" /></div></td></tr>');
+     });
+
+	//--------------------------------------------------
+	// Resets the form
+	//--------------------------------------------------
+     jQuery('#reset').click(function() {
+	  jQuery('#scheduleForm').resetForm();
+     });
+
+    });
+
+  </script>
+</head>
+<body>
+<div id="header">
+<h1><em>SlatePermutate</em> -  Scheduler</h1>
+</div>
+<div id="content">
+<h3>Saved Schedules:</h3>
+<p>
+<?php
+if(isset($_SESSION['saved']))
+	foreach($_SESSION['saved'] as $schedule)
+		echo "Saved Schedule<br />";
+else
+	echo "No saved schedules!<br />";
+?>
+</p>
+
+<form method="post" action="process.php" id="scheduleForm">
+
+<table id="jsrows">
+<!-- Header -->
+<tr>
+	<td>Class</td>
+	<td class="center">Letter</td>
+	<td class="center">Start Time</td>
+	<td class="center">End Time</td>
+	<td class="center">M</td>
+	<td class="center">Tu</td>
+	<td class="center">W</td>
+	<td class="center">Th</td>
+	<td class="center">F</td>
+	<td class="center">Add</td>
+	<td class="center">Delete</td>
+</tr>
+</table>
+
+<div class="paddingtop" id="classage"><input type="button" value="Add class" /></div>
+<div class="paddingtop"><input style="float:left;" type="submit" value="Submit" /></div>
+<p><br /></p>
+<div class="paddingtop" id="reset"><input style="float:left;" type="button" value="Reset" /></div>
+
+
+</form>
+<p>&nbsp;<br /></p>
+<h3>TODO:</h3>
+<ul>
+<li>Form validation to ensure endtime is after starttime, at least one day is checked.</li>
+</ul>
+
+</div>
+<div id="footer">
+<h5>&copy; <?php echo Date("Y"); ?> Nathan Gelderloos<br />
+with special thanks to <a href="http://ethanzonca.com">Ethan Zonca</a></h5>
+</div>
+</body>
+</html>
\ No newline at end of file
diff --git a/process.php b/process.php
new file mode 100644
--- /dev/null
+++ b/process.php
@@ -0,0 +1,104 @@
+<?php
+
+session_start();
+
+include_once 'errors.php';
+include_once 'class.schedule.php';
+include_once 'class.class.php';
+include_once 'class.section.php';
+
+function sortInputs($post){
+//	return array_filter($post['postData']); // Remove any null or unset items. Disabled as it kills day stuff, @FIXME and add day unset setting here (==0).
+	return $post['postData'];
+}
+
+
+// Converts a 5-element array into a nice string.
+// Supports multiple modes, prettiness, and searching for different indicators
+function arrayToDays($array, $mode = 'num', $pretty = false, $key = 1) {
+	$outString = '';
+	switch($mode){
+		case 'short':
+			$days = array('Mon','Tue','Wed','Thur','Fri');
+			break;
+		case 'long':
+			$days = array('Monday','Tuesday','Wednesday','Thursday','Friday');
+			break;
+		case 'num':
+			$days = array('1','2','3','4','5');
+			break;
+		default:
+			$outString = 'Invalid mode passed to arrayToDays()!';
+			return $outString;
+	}
+	if(count($array) > 1){
+		for($i=0; $i<=4; $i++)	{
+			if(isset($array[$i]) && $array[$i] == $key){
+				$outString .= $days[$i];
+				if($pretty)
+					$outString .= ', ';
+			}
+		}
+		if($pretty){
+			$outString = substr($outString,0,strlen($outString) - 2); // Remove last comma and space
+			$outString = substr($outString,0, strrpos( $outString, ' ')) . ' and' . substr($outString, strrpos( $outString, ' '), strlen($outString));
+		}
+	}
+	else {
+		for($i=0; $i<=4; $i++)
+			if(isset($array[$i]))
+				$outString = $days[$i];
+	}
+	return $outString;
+}
+
+function prettyTime($time){
+	return substr($time,0,strlen($time)-2) . ":" . substr($time,strlen($time)-2, strlen($time));
+}
+
+$DEBUG = false;
+if(isset($_GET['debug']))
+	$DEBUG = $_GET['debug'];
+
+if(!$DEBUG){
+
+
+	$allClasses = new Schedule("Fall 2010");
+
+	foreach(sortInputs($_POST) as $class)
+	{
+		$allClasses->addClass($class['name']);
+
+		foreach($class as $section)
+			if(is_array($section)) // Skip the name, which isn't a section
+			{
+		             $allClasses->addSection($class['name'], $section['letter'], $section['start'], $section['end'], arrayToDays($section['days']));
+			}
+	}
+	$allClasses->findPossibilities();
+	$allClasses->writeoutTables();
+	if(!isset($_SESSION['saved']))
+		$_SESSION['saved'] = array();
+	array_push ( $_SESSION['saved'], $allClasses );
+	$_SESSION['meh'] = "MEH!";
+
+} else {
+
+
+	echo '<pre>DEBUG OUTPUT: <br /><br />';
+	foreach(sortInputs($_POST) as $class) {
+		echo 'Class: ' . $class['name'] . '<br />';
+		foreach($class as $section)
+			if(is_array($section))
+			{
+				echo '---- Section that starts at ' . prettyTime($section['start']) . ' and ends at ' . prettyTime($section['end']) . '. This class meets on ';
+				echo arrayToDays($section['days'],'long',true) . '.<br />';
+			}
+		echo '<br />';
+	}
+	echo '</pre>';
+
+
+}
+
+?>
\ No newline at end of file
diff --git a/prototype.js b/prototype.js
new file mode 100644
--- /dev/null
+++ b/prototype.js
@@ -0,0 +1,3271 @@
+/*  Prototype JavaScript framework, version 1.5.1
+ *  (c) 2005-2007 Sam Stephenson
+ *
+ *  Prototype is freely distributable under the terms of an MIT-style license.
+ *  For details, see the Prototype web site: http://www.prototypejs.org/
+ *
+/*--------------------------------------------------------------------------*/
+
+var Prototype = {
+  Version: '1.5.1',
+
+  Browser: {
+    IE:     !!(window.attachEvent && !window.opera),
+    Opera:  !!window.opera,
+    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
+    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1
+  },
+
+  BrowserFeatures: {
+    XPath: !!document.evaluate,
+    ElementExtensions: !!window.HTMLElement,
+    SpecificElementExtensions:
+      (document.createElement('div').__proto__ !==
+       document.createElement('form').__proto__)
+  },
+
+  ScriptFragment: '<script[^>]*>([\u0001-\uFFFF]*?)</script>',
+  JSONFilter: /^\/\*-secure-\s*(.*)\s*\*\/\s*$/,
+
+  emptyFunction: function() { },
+  K: function(x) { return x }
+}
+
+var Class = {
+  create: function() {
+    return function() {
+      this.initialize.apply(this, arguments);
+    }
+  }
+}
+
+var Abstract = new Object();
+
+Object.extend = function(destination, source) {
+  for (var property in source) {
+    destination[property] = source[property];
+  }
+  return destination;
+}
+
+Object.extend(Object, {
+  inspect: function(object) {
+    try {
+      if (object === undefined) return 'undefined';
+      if (object === null) return 'null';
+      return object.inspect ? object.inspect() : object.toString();
+    } catch (e) {
+      if (e instanceof RangeError) return '...';
+      throw e;
+    }
+  },
+
+  toJSON: function(object) {
+    var type = typeof object;
+    switch(type) {
+      case 'undefined':
+      case 'function':
+      case 'unknown': return;
+      case 'boolean': return object.toString();
+    }
+    if (object === null) return 'null';
+    if (object.toJSON) return object.toJSON();
+    if (object.ownerDocument === document) return;
+    var results = [];
+    for (var property in object) {
+      var value = Object.toJSON(object[property]);
+      if (value !== undefined)
+        results.push(property.toJSON() + ': ' + value);
+    }
+    return '{' + results.join(', ') + '}';
+  },
+
+  keys: function(object) {
+    var keys = [];
+    for (var property in object)
+      keys.push(property);
+    return keys;
+  },
+
+  values: function(object) {
+    var values = [];
+    for (var property in object)
+      values.push(object[property]);
+    return values;
+  },
+
+  clone: function(object) {
+    return Object.extend({}, object);
+  }
+});
+
+Function.prototype.bind = function() {
+  var __method = this, args = $A(arguments), object = args.shift();
+  return function() {
+    return __method.apply(object, args.concat($A(arguments)));
+  }
+}
+
+Function.prototype.bindAsEventListener = function(object) {
+  var __method = this, args = $A(arguments), object = args.shift();
+  return function(event) {
+    return __method.apply(object, [event || window.event].concat(args));
+  }
+}
+
+Object.extend(Number.prototype, {
+  toColorPart: function() {
+    return this.toPaddedString(2, 16);
+  },
+
+  succ: function() {
+    return this + 1;
+  },
+
+  times: function(iterator) {
+    $R(0, this, true).each(iterator);
+    return this;
+  },
+
+  toPaddedString: function(length, radix) {
+    var string = this.toString(radix || 10);
+    return '0'.times(length - string.length) + string;
+  },
+
+  toJSON: function() {
+    return isFinite(this) ? this.toString() : 'null';
+  }
+});
+
+Date.prototype.toJSON = function() {
+  return '"' + this.getFullYear() + '-' +
+    (this.getMonth() + 1).toPaddedString(2) + '-' +
+    this.getDate().toPaddedString(2) + 'T' +
+    this.getHours().toPaddedString(2) + ':' +
+    this.getMinutes().toPaddedString(2) + ':' +
+    this.getSeconds().toPaddedString(2) + '"';
+};
+
+var Try = {
+  these: function() {
+    var returnValue;
+
+    for (var i = 0, length = arguments.length; i < length; i++) {
+      var lambda = arguments[i];
+      try {
+        returnValue = lambda();
+        break;
+      } catch (e) {}
+    }
+
+    return returnValue;
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var PeriodicalExecuter = Class.create();
+PeriodicalExecuter.prototype = {
+  initialize: function(callback, frequency) {
+    this.callback = callback;
+    this.frequency = frequency;
+    this.currentlyExecuting = false;
+
+    this.registerCallback();
+  },
+
+  registerCallback: function() {
+    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  stop: function() {
+    if (!this.timer) return;
+    clearInterval(this.timer);
+    this.timer = null;
+  },
+
+  onTimerEvent: function() {
+    if (!this.currentlyExecuting) {
+      try {
+        this.currentlyExecuting = true;
+        this.callback(this);
+      } finally {
+        this.currentlyExecuting = false;
+      }
+    }
+  }
+}
+Object.extend(String, {
+  interpret: function(value) {
+    return value == null ? '' : String(value);
+  },
+  specialChar: {
+    '\b': '\\b',
+    '\t': '\\t',
+    '\n': '\\n',
+    '\f': '\\f',
+    '\r': '\\r',
+    '\\': '\\\\'
+  }
+});
+
+Object.extend(String.prototype, {
+  gsub: function(pattern, replacement) {
+    var result = '', source = this, match;
+    replacement = arguments.callee.prepareReplacement(replacement);
+
+    while (source.length > 0) {
+      if (match = source.match(pattern)) {
+        result += source.slice(0, match.index);
+        result += String.interpret(replacement(match));
+        source  = source.slice(match.index + match[0].length);
+      } else {
+        result += source, source = '';
+      }
+    }
+    return result;
+  },
+
+  sub: function(pattern, replacement, count) {
+    replacement = this.gsub.prepareReplacement(replacement);
+    count = count === undefined ? 1 : count;
+
+    return this.gsub(pattern, function(match) {
+      if (--count < 0) return match[0];
+      return replacement(match);
+    });
+  },
+
+  scan: function(pattern, iterator) {
+    this.gsub(pattern, iterator);
+    return this;
+  },
+
+  truncate: function(length, truncation) {
+    length = length || 30;
+    truncation = truncation === undefined ? '...' : truncation;
+    return this.length > length ?
+      this.slice(0, length - truncation.length) + truncation : this;
+  },
+
+  strip: function() {
+    return this.replace(/^\s+/, '').replace(/\s+$/, '');
+  },
+
+  stripTags: function() {
+    return this.replace(/<\/?[^>]+>/gi, '');
+  },
+
+  stripScripts: function() {
+    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+  },
+
+  extractScripts: function() {
+    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+    return (this.match(matchAll) || []).map(function(scriptTag) {
+      return (scriptTag.match(matchOne) || ['', ''])[1];
+    });
+  },
+
+  evalScripts: function() {
+    return this.extractScripts().map(function(script) { return eval(script) });
+  },
+
+  escapeHTML: function() {
+    var self = arguments.callee;
+    self.text.data = this;
+    return self.div.innerHTML;
+  },
+
+  unescapeHTML: function() {
+    var div = document.createElement('div');
+    div.innerHTML = this.stripTags();
+    return div.childNodes[0] ? (div.childNodes.length > 1 ?
+      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
+      div.childNodes[0].nodeValue) : '';
+  },
+
+  toQueryParams: function(separator) {
+    var match = this.strip().match(/([^?#]*)(#.*)?$/);
+    if (!match) return {};
+
+    return match[1].split(separator || '&').inject({}, function(hash, pair) {
+      if ((pair = pair.split('='))[0]) {
+        var key = decodeURIComponent(pair.shift());
+        var value = pair.length > 1 ? pair.join('=') : pair[0];
+        if (value != undefined) value = decodeURIComponent(value);
+
+        if (key in hash) {
+          if (hash[key].constructor != Array) hash[key] = [hash[key]];
+          hash[key].push(value);
+        }
+        else hash[key] = value;
+      }
+      return hash;
+    });
+  },
+
+  toArray: function() {
+    return this.split('');
+  },
+
+  succ: function() {
+    return this.slice(0, this.length - 1) +
+      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+  },
+
+  times: function(count) {
+    var result = '';
+    for (var i = 0; i < count; i++) result += this;
+    return result;
+  },
+
+  camelize: function() {
+    var parts = this.split('-'), len = parts.length;
+    if (len == 1) return parts[0];
+
+    var camelized = this.charAt(0) == '-'
+      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+      : parts[0];
+
+    for (var i = 1; i < len; i++)
+      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
+
+    return camelized;
+  },
+
+  capitalize: function() {
+    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+  },
+
+  underscore: function() {
+    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+  },
+
+  dasherize: function() {
+    return this.gsub(/_/,'-');
+  },
+
+  inspect: function(useDoubleQuotes) {
+    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
+      var character = String.specialChar[match[0]];
+      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
+    });
+    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
+    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+  },
+
+  toJSON: function() {
+    return this.inspect(true);
+  },
+
+  unfilterJSON: function(filter) {
+    return this.sub(filter || Prototype.JSONFilter, '#{1}');
+  },
+
+  evalJSON: function(sanitize) {
+    var json = this.unfilterJSON();
+    try {
+      if (!sanitize || (/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(json)))
+        return eval('(' + json + ')');
+    } catch (e) { }
+    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
+  },
+
+  include: function(pattern) {
+    return this.indexOf(pattern) > -1;
+  },
+
+  startsWith: function(pattern) {
+    return this.indexOf(pattern) === 0;
+  },
+
+  endsWith: function(pattern) {
+    var d = this.length - pattern.length;
+    return d >= 0 && this.lastIndexOf(pattern) === d;
+  },
+
+  empty: function() {
+    return this == '';
+  },
+
+  blank: function() {
+    return /^\s*$/.test(this);
+  }
+});
+
+if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
+  escapeHTML: function() {
+    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
+  },
+  unescapeHTML: function() {
+    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
+  }
+});
+
+String.prototype.gsub.prepareReplacement = function(replacement) {
+  if (typeof replacement == 'function') return replacement;
+  var template = new Template(replacement);
+  return function(match) { return template.evaluate(match) };
+}
+
+String.prototype.parseQuery = String.prototype.toQueryParams;
+
+Object.extend(String.prototype.escapeHTML, {
+  div:  document.createElement('div'),
+  text: document.createTextNode('')
+});
+
+with (String.prototype.escapeHTML) div.appendChild(text);
+
+var Template = Class.create();
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+Template.prototype = {
+  initialize: function(template, pattern) {
+    this.template = template.toString();
+    this.pattern  = pattern || Template.Pattern;
+  },
+
+  evaluate: function(object) {
+    return this.template.gsub(this.pattern, function(match) {
+      var before = match[1];
+      if (before == '\\') return match[2];
+      return before + String.interpret(object[match[3]]);
+    });
+  }
+}
+
+var $break = {}, $continue = new Error('"throw $continue" is deprecated, use "return" instead');
+
+var Enumerable = {
+  each: function(iterator) {
+    var index = 0;
+    try {
+      this._each(function(value) {
+        iterator(value, index++);
+      });
+    } catch (e) {
+      if (e != $break) throw e;
+    }
+    return this;
+  },
+
+  eachSlice: function(number, iterator) {
+    var index = -number, slices = [], array = this.toArray();
+    while ((index += number) < array.length)
+      slices.push(array.slice(index, index+number));
+    return slices.map(iterator);
+  },
+
+  all: function(iterator) {
+    var result = true;
+    this.each(function(value, index) {
+      result = result && !!(iterator || Prototype.K)(value, index);
+      if (!result) throw $break;
+    });
+    return result;
+  },
+
+  any: function(iterator) {
+    var result = false;
+    this.each(function(value, index) {
+      if (result = !!(iterator || Prototype.K)(value, index))
+        throw $break;
+    });
+    return result;
+  },
+
+  collect: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      results.push((iterator || Prototype.K)(value, index));
+    });
+    return results;
+  },
+
+  detect: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      if (iterator(value, index)) {
+        result = value;
+        throw $break;
+      }
+    });
+    return result;
+  },
+
+  findAll: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      if (iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+
+  grep: function(pattern, iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      var stringValue = value.toString();
+      if (stringValue.match(pattern))
+        results.push((iterator || Prototype.K)(value, index));
+    })
+    return results;
+  },
+
+  include: function(object) {
+    var found = false;
+    this.each(function(value) {
+      if (value == object) {
+        found = true;
+        throw $break;
+      }
+    });
+    return found;
+  },
+
+  inGroupsOf: function(number, fillWith) {
+    fillWith = fillWith === undefined ? null : fillWith;
+    return this.eachSlice(number, function(slice) {
+      while(slice.length < number) slice.push(fillWith);
+      return slice;
+    });
+  },
+
+  inject: function(memo, iterator) {
+    this.each(function(value, index) {
+      memo = iterator(memo, value, index);
+    });
+    return memo;
+  },
+
+  invoke: function(method) {
+    var args = $A(arguments).slice(1);
+    return this.map(function(value) {
+      return value[method].apply(value, args);
+    });
+  },
+
+  max: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (result == undefined || value >= result)
+        result = value;
+    });
+    return result;
+  },
+
+  min: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (result == undefined || value < result)
+        result = value;
+    });
+    return result;
+  },
+
+  partition: function(iterator) {
+    var trues = [], falses = [];
+    this.each(function(value, index) {
+      ((iterator || Prototype.K)(value, index) ?
+        trues : falses).push(value);
+    });
+    return [trues, falses];
+  },
+
+  pluck: function(property) {
+    var results = [];
+    this.each(function(value, index) {
+      results.push(value[property]);
+    });
+    return results;
+  },
+
+  reject: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      if (!iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+
+  sortBy: function(iterator) {
+    return this.map(function(value, index) {
+      return {value: value, criteria: iterator(value, index)};
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }).pluck('value');
+  },
+
+  toArray: function() {
+    return this.map();
+  },
+
+  zip: function() {
+    var iterator = Prototype.K, args = $A(arguments);
+    if (typeof args.last() == 'function')
+      iterator = args.pop();
+
+    var collections = [this].concat(args).map($A);
+    return this.map(function(value, index) {
+      return iterator(collections.pluck(index));
+    });
+  },
+
+  size: function() {
+    return this.toArray().length;
+  },
+
+  inspect: function() {
+    return '#<Enumerable:' + this.toArray().inspect() + '>';
+  }
+}
+
+Object.extend(Enumerable, {
+  map:     Enumerable.collect,
+  find:    Enumerable.detect,
+  select:  Enumerable.findAll,
+  member:  Enumerable.include,
+  entries: Enumerable.toArray
+});
+var $A = Array.from = function(iterable) {
+  if (!iterable) return [];
+  if (iterable.toArray) {
+    return iterable.toArray();
+  } else {
+    var results = [];
+    for (var i = 0, length = iterable.length; i < length; i++)
+      results.push(iterable[i]);
+    return results;
+  }
+}
+
+if (Prototype.Browser.WebKit) {
+  $A = Array.from = function(iterable) {
+    if (!iterable) return [];
+    if (!(typeof iterable == 'function' && iterable == '[object NodeList]') &&
+      iterable.toArray) {
+      return iterable.toArray();
+    } else {
+      var results = [];
+      for (var i = 0, length = iterable.length; i < length; i++)
+        results.push(iterable[i]);
+      return results;
+    }
+  }
+}
+
+Object.extend(Array.prototype, Enumerable);
+
+if (!Array.prototype._reverse)
+  Array.prototype._reverse = Array.prototype.reverse;
+
+Object.extend(Array.prototype, {
+  _each: function(iterator) {
+    for (var i = 0, length = this.length; i < length; i++)
+      iterator(this[i]);
+  },
+
+  clear: function() {
+    this.length = 0;
+    return this;
+  },
+
+  first: function() {
+    return this[0];
+  },
+
+  last: function() {
+    return this[this.length - 1];
+  },
+
+  compact: function() {
+    return this.select(function(value) {
+      return value != null;
+    });
+  },
+
+  flatten: function() {
+    return this.inject([], function(array, value) {
+      return array.concat(value && value.constructor == Array ?
+        value.flatten() : [value]);
+    });
+  },
+
+  without: function() {
+    var values = $A(arguments);
+    return this.select(function(value) {
+      return !values.include(value);
+    });
+  },
+
+  indexOf: function(object) {
+    for (var i = 0, length = this.length; i < length; i++)
+      if (this[i] == object) return i;
+    return -1;
+  },
+
+  reverse: function(inline) {
+    return (inline !== false ? this : this.toArray())._reverse();
+  },
+
+  reduce: function() {
+    return this.length > 1 ? this : this[0];
+  },
+
+  uniq: function(sorted) {
+    return this.inject([], function(array, value, index) {
+      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
+        array.push(value);
+      return array;
+    });
+  },
+
+  clone: function() {
+    return [].concat(this);
+  },
+
+  size: function() {
+    return this.length;
+  },
+
+  inspect: function() {
+    return '[' + this.map(Object.inspect).join(', ') + ']';
+  },
+
+  toJSON: function() {
+    var results = [];
+    this.each(function(object) {
+      var value = Object.toJSON(object);
+      if (value !== undefined) results.push(value);
+    });
+    return '[' + results.join(', ') + ']';
+  }
+});
+
+Array.prototype.toArray = Array.prototype.clone;
+
+function $w(string) {
+  string = string.strip();
+  return string ? string.split(/\s+/) : [];
+}
+
+if (Prototype.Browser.Opera){
+  Array.prototype.concat = function() {
+    var array = [];
+    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+    for (var i = 0, length = arguments.length; i < length; i++) {
+      if (arguments[i].constructor == Array) {
+        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
+          array.push(arguments[i][j]);
+      } else {
+        array.push(arguments[i]);
+      }
+    }
+    return array;
+  }
+}
+var Hash = function(object) {
+  if (object instanceof Hash) this.merge(object);
+  else Object.extend(this, object || {});
+};
+
+Object.extend(Hash, {
+  toQueryString: function(obj) {
+    var parts = [];
+    parts.add = arguments.callee.addPair;
+
+    this.prototype._each.call(obj, function(pair) {
+      if (!pair.key) return;
+      var value = pair.value;
+
+      if (value && typeof value == 'object') {
+        if (value.constructor == Array) value.each(function(value) {
+          parts.add(pair.key, value);
+        });
+        return;
+      }
+      parts.add(pair.key, value);
+    });
+
+    return parts.join('&');
+  },
+
+  toJSON: function(object) {
+    var results = [];
+    this.prototype._each.call(object, function(pair) {
+      var value = Object.toJSON(pair.value);
+      if (value !== undefined) results.push(pair.key.toJSON() + ': ' + value);
+    });
+    return '{' + results.join(', ') + '}';
+  }
+});
+
+Hash.toQueryString.addPair = function(key, value, prefix) {
+  key = encodeURIComponent(key);
+  if (value === undefined) this.push(key);
+  else this.push(key + '=' + (value == null ? '' : encodeURIComponent(value)));
+}
+
+Object.extend(Hash.prototype, Enumerable);
+Object.extend(Hash.prototype, {
+  _each: function(iterator) {
+    for (var key in this) {
+      var value = this[key];
+      if (value && value == Hash.prototype[key]) continue;
+
+      var pair = [key, value];
+      pair.key = key;
+      pair.value = value;
+      iterator(pair);
+    }
+  },
+
+  keys: function() {
+    return this.pluck('key');
+  },
+
+  values: function() {
+    return this.pluck('value');
+  },
+
+  merge: function(hash) {
+    return $H(hash).inject(this, function(mergedHash, pair) {
+      mergedHash[pair.key] = pair.value;
+      return mergedHash;
+    });
+  },
+
+  remove: function() {
+    var result;
+    for(var i = 0, length = arguments.length; i < length; i++) {
+      var value = this[arguments[i]];
+      if (value !== undefined){
+        if (result === undefined) result = value;
+        else {
+          if (result.constructor != Array) result = [result];
+          result.push(value)
+        }
+      }
+      delete this[arguments[i]];
+    }
+    return result;
+  },
+
+  toQueryString: function() {
+    return Hash.toQueryString(this);
+  },
+
+  inspect: function() {
+    return '#<Hash:{' + this.map(function(pair) {
+      return pair.map(Object.inspect).join(': ');
+    }).join(', ') + '}>';
+  },
+
+  toJSON: function() {
+    return Hash.toJSON(this);
+  }
+});
+
+function $H(object) {
+  if (object instanceof Hash) return object;
+  return new Hash(object);
+};
+
+// Safari iterates over shadowed properties
+if (function() {
+  var i = 0, Test = function(value) { this.key = value };
+  Test.prototype.key = 'foo';
+  for (var property in new Test('bar')) i++;
+  return i > 1;
+}()) Hash.prototype._each = function(iterator) {
+  var cache = [];
+  for (var key in this) {
+    var value = this[key];
+    if ((value && value == Hash.prototype[key]) || cache.include(key)) continue;
+    cache.push(key);
+    var pair = [key, value];
+    pair.key = key;
+    pair.value = value;
+    iterator(pair);
+  }
+};
+ObjectRange = Class.create();
+Object.extend(ObjectRange.prototype, Enumerable);
+Object.extend(ObjectRange.prototype, {
+  initialize: function(start, end, exclusive) {
+    this.start = start;
+    this.end = end;
+    this.exclusive = exclusive;
+  },
+
+  _each: function(iterator) {
+    var value = this.start;
+    while (this.include(value)) {
+      iterator(value);
+      value = value.succ();
+    }
+  },
+
+  include: function(value) {
+    if (value < this.start)
+      return false;
+    if (this.exclusive)
+      return value < this.end;
+    return value <= this.end;
+  }
+});
+
+var $R = function(start, end, exclusive) {
+  return new ObjectRange(start, end, exclusive);
+}
+
+var Ajax = {
+  getTransport: function() {
+    return Try.these(
+      function() {return new XMLHttpRequest()},
+      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
+    ) || false;
+  },
+
+  activeRequestCount: 0
+}
+
+Ajax.Responders = {
+  responders: [],
+
+  _each: function(iterator) {
+    this.responders._each(iterator);
+  },
+
+  register: function(responder) {
+    if (!this.include(responder))
+      this.responders.push(responder);
+  },
+
+  unregister: function(responder) {
+    this.responders = this.responders.without(responder);
+  },
+
+  dispatch: function(callback, request, transport, json) {
+    this.each(function(responder) {
+      if (typeof responder[callback] == 'function') {
+        try {
+          responder[callback].apply(responder, [request, transport, json]);
+        } catch (e) {}
+      }
+    });
+  }
+};
+
+Object.extend(Ajax.Responders, Enumerable);
+
+Ajax.Responders.register({
+  onCreate: function() {
+    Ajax.activeRequestCount++;
+  },
+  onComplete: function() {
+    Ajax.activeRequestCount--;
+  }
+});
+
+Ajax.Base = function() {};
+Ajax.Base.prototype = {
+  setOptions: function(options) {
+    this.options = {
+      method:       'post',
+      asynchronous: true,
+      contentType:  'application/x-www-form-urlencoded',
+      encoding:     'UTF-8',
+      parameters:   ''
+    }
+    Object.extend(this.options, options || {});
+
+    this.options.method = this.options.method.toLowerCase();
+    if (typeof this.options.parameters == 'string')
+      this.options.parameters = this.options.parameters.toQueryParams();
+  }
+}
+
+Ajax.Request = Class.create();
+Ajax.Request.Events =
+  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+
+Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
+  _complete: false,
+
+  initialize: function(url, options) {
+    this.transport = Ajax.getTransport();
+    this.setOptions(options);
+    this.request(url);
+  },
+
+  request: function(url) {
+    this.url = url;
+    this.method = this.options.method;
+    var params = Object.clone(this.options.parameters);
+
+    if (!['get', 'post'].include(this.method)) {
+      // simulate other verbs over post
+      params['_method'] = this.method;
+      this.method = 'post';
+    }
+
+    this.parameters = params;
+
+    if (params = Hash.toQueryString(params)) {
+      // when GET, append parameters to URL
+      if (this.method == 'get')
+        this.url += (this.url.include('?') ? '&' : '?') + params;
+      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+        params += '&_=';
+    }
+
+    try {
+      if (this.options.onCreate) this.options.onCreate(this.transport);
+      Ajax.Responders.dispatch('onCreate', this, this.transport);
+
+      this.transport.open(this.method.toUpperCase(), this.url,
+        this.options.asynchronous);
+
+      if (this.options.asynchronous)
+        setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
+
+      this.transport.onreadystatechange = this.onStateChange.bind(this);
+      this.setRequestHeaders();
+
+      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
+      this.transport.send(this.body);
+
+      /* Force Firefox to handle ready state 4 for synchronous requests */
+      if (!this.options.asynchronous && this.transport.overrideMimeType)
+        this.onStateChange();
+
+    }
+    catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
+  onStateChange: function() {
+    var readyState = this.transport.readyState;
+    if (readyState > 1 && !((readyState == 4) && this._complete))
+      this.respondToReadyState(this.transport.readyState);
+  },
+
+  setRequestHeaders: function() {
+    var headers = {
+      'X-Requested-With': 'XMLHttpRequest',
+      'X-Prototype-Version': Prototype.Version,
+      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+    };
+
+    if (this.method == 'post') {
+      headers['Content-type'] = this.options.contentType +
+        (this.options.encoding ? '; charset=' + this.options.encoding : '');
+
+      /* Force "Connection: close" for older Mozilla browsers to work
+       * around a bug where XMLHttpRequest sends an incorrect
+       * Content-length header. See Mozilla Bugzilla #246651.
+       */
+      if (this.transport.overrideMimeType &&
+          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+            headers['Connection'] = 'close';
+    }
+
+    // user-defined headers
+    if (typeof this.options.requestHeaders == 'object') {
+      var extras = this.options.requestHeaders;
+
+      if (typeof extras.push == 'function')
+        for (var i = 0, length = extras.length; i < length; i += 2)
+          headers[extras[i]] = extras[i+1];
+      else
+        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+    }
+
+    for (var name in headers)
+      this.transport.setRequestHeader(name, headers[name]);
+  },
+
+  success: function() {
+    return !this.transport.status
+        || (this.transport.status >= 200 && this.transport.status < 300);
+  },
+
+  respondToReadyState: function(readyState) {
+    var state = Ajax.Request.Events[readyState];
+    var transport = this.transport, json = this.evalJSON();
+
+    if (state == 'Complete') {
+      try {
+        this._complete = true;
+        (this.options['on' + this.transport.status]
+         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+         || Prototype.emptyFunction)(transport, json);
+      } catch (e) {
+        this.dispatchException(e);
+      }
+
+      var contentType = this.getHeader('Content-type');
+      if (contentType && contentType.strip().
+        match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
+          this.evalResponse();
+    }
+
+    try {
+      (this.options['on' + state] || Prototype.emptyFunction)(transport, json);
+      Ajax.Responders.dispatch('on' + state, this, transport, json);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+
+    if (state == 'Complete') {
+      // avoid memory leak in MSIE: clean up
+      this.transport.onreadystatechange = Prototype.emptyFunction;
+    }
+  },
+
+  getHeader: function(name) {
+    try {
+      return this.transport.getResponseHeader(name);
+    } catch (e) { return null }
+  },
+
+  evalJSON: function() {
+    try {
+      var json = this.getHeader('X-JSON');
+      return json ? json.evalJSON() : null;
+    } catch (e) { return null }
+  },
+
+  evalResponse: function() {
+    try {
+      return eval((this.transport.responseText || '').unfilterJSON());
+    } catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
+  dispatchException: function(exception) {
+    (this.options.onException || Prototype.emptyFunction)(this, exception);
+    Ajax.Responders.dispatch('onException', this, exception);
+  }
+});
+
+Ajax.Updater = Class.create();
+
+Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
+  initialize: function(container, url, options) {
+    this.container = {
+      success: (container.success || container),
+      failure: (container.failure || (container.success ? null : container))
+    }
+
+    this.transport = Ajax.getTransport();
+    this.setOptions(options);
+
+    var onComplete = this.options.onComplete || Prototype.emptyFunction;
+    this.options.onComplete = (function(transport, param) {
+      this.updateContent();
+      onComplete(transport, param);
+    }).bind(this);
+
+    this.request(url);
+  },
+
+  updateContent: function() {
+    var receiver = this.container[this.success() ? 'success' : 'failure'];
+    var response = this.transport.responseText;
+
+    if (!this.options.evalScripts) response = response.stripScripts();
+
+    if (receiver = $(receiver)) {
+      if (this.options.insertion)
+        new this.options.insertion(receiver, response);
+      else
+        receiver.update(response);
+    }
+
+    if (this.success()) {
+      if (this.onComplete)
+        setTimeout(this.onComplete.bind(this), 10);
+    }
+  }
+});
+
+Ajax.PeriodicalUpdater = Class.create();
+Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
+  initialize: function(container, url, options) {
+    this.setOptions(options);
+    this.onComplete = this.options.onComplete;
+
+    this.frequency = (this.options.frequency || 2);
+    this.decay = (this.options.decay || 1);
+
+    this.updater = {};
+    this.container = container;
+    this.url = url;
+
+    this.start();
+  },
+
+  start: function() {
+    this.options.onComplete = this.updateComplete.bind(this);
+    this.onTimerEvent();
+  },
+
+  stop: function() {
+    this.updater.options.onComplete = undefined;
+    clearTimeout(this.timer);
+    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+  },
+
+  updateComplete: function(request) {
+    if (this.options.decay) {
+      this.decay = (request.responseText == this.lastText ?
+        this.decay * this.options.decay : 1);
+
+      this.lastText = request.responseText;
+    }
+    this.timer = setTimeout(this.onTimerEvent.bind(this),
+      this.decay * this.frequency * 1000);
+  },
+
+  onTimerEvent: function() {
+    this.updater = new Ajax.Updater(this.container, this.url, this.options);
+  }
+});
+function $(element) {
+  if (arguments.length > 1) {
+    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+      elements.push($(arguments[i]));
+    return elements;
+  }
+  if (typeof element == 'string')
+    element = document.getElementById(element);
+  return Element.extend(element);
+}
+
+if (Prototype.BrowserFeatures.XPath) {
+  document._getElementsByXPath = function(expression, parentElement) {
+    var results = [];
+    var query = document.evaluate(expression, $(parentElement) || document,
+      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    for (var i = 0, length = query.snapshotLength; i < length; i++)
+      results.push(query.snapshotItem(i));
+    return results;
+  };
+
+  document.getElementsByClassName = function(className, parentElement) {
+    var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
+    return document._getElementsByXPath(q, parentElement);
+  }
+
+} else document.getElementsByClassName = function(className, parentElement) {
+  var children = ($(parentElement) || document.body).getElementsByTagName('*');
+  var elements = [], child;
+  for (var i = 0, length = children.length; i < length; i++) {
+    child = children[i];
+    if (Element.hasClassName(child, className))
+      elements.push(Element.extend(child));
+  }
+  return elements;
+};
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Element) var Element = {};
+
+Element.extend = function(element) {
+  var F = Prototype.BrowserFeatures;
+  if (!element || !element.tagName || element.nodeType == 3 ||
+   element._extended || F.SpecificElementExtensions || element == window)
+    return element;
+
+  var methods = {}, tagName = element.tagName, cache = Element.extend.cache,
+   T = Element.Methods.ByTag;
+
+  // extend methods for all tags (Safari doesn't need this)
+  if (!F.ElementExtensions) {
+    Object.extend(methods, Element.Methods),
+    Object.extend(methods, Element.Methods.Simulated);
+  }
+
+  // extend methods for specific tags
+  if (T[tagName]) Object.extend(methods, T[tagName]);
+
+  for (var property in methods) {
+    var value = methods[property];
+    if (typeof value == 'function' && !(property in element))
+      element[property] = cache.findOrStore(value);
+  }
+
+  element._extended = Prototype.emptyFunction;
+  return element;
+};
+
+Element.extend.cache = {
+  findOrStore: function(value) {
+    return this[value] = this[value] || function() {
+      return value.apply(null, [this].concat($A(arguments)));
+    }
+  }
+};
+
+Element.Methods = {
+  visible: function(element) {
+    return $(element).style.display != 'none';
+  },
+
+  toggle: function(element) {
+    element = $(element);
+    Element[Element.visible(element) ? 'hide' : 'show'](element);
+    return element;
+  },
+
+  hide: function(element) {
+    $(element).style.display = 'none';
+    return element;
+  },
+
+  show: function(element) {
+    $(element).style.display = '';
+    return element;
+  },
+
+  remove: function(element) {
+    element = $(element);
+    element.parentNode.removeChild(element);
+    return element;
+  },
+
+  update: function(element, html) {
+    html = typeof html == 'undefined' ? '' : html.toString();
+    $(element).innerHTML = html.stripScripts();
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+
+  replace: function(element, html) {
+    element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
+    if (element.outerHTML) {
+      element.outerHTML = html.stripScripts();
+    } else {
+      var range = element.ownerDocument.createRange();
+      range.selectNodeContents(element);
+      element.parentNode.replaceChild(
+        range.createContextualFragment(html.stripScripts()), element);
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+    return element;
+  },
+
+  inspect: function(element) {
+    element = $(element);
+    var result = '<' + element.tagName.toLowerCase();
+    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+      var property = pair.first(), attribute = pair.last();
+      var value = (element[property] || '').toString();
+      if (value) result += ' ' + attribute + '=' + value.inspect(true);
+    });
+    return result + '>';
+  },
+
+  recursivelyCollect: function(element, property) {
+    element = $(element);
+    var elements = [];
+    while (element = element[property])
+      if (element.nodeType == 1)
+        elements.push(Element.extend(element));
+    return elements;
+  },
+
+  ancestors: function(element) {
+    return $(element).recursivelyCollect('parentNode');
+  },
+
+  descendants: function(element) {
+    return $A($(element).getElementsByTagName('*')).each(Element.extend);
+  },
+
+  firstDescendant: function(element) {
+    element = $(element).firstChild;
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    return $(element);
+  },
+
+  immediateDescendants: function(element) {
+    if (!(element = $(element).firstChild)) return [];
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    if (element) return [element].concat($(element).nextSiblings());
+    return [];
+  },
+
+  previousSiblings: function(element) {
+    return $(element).recursivelyCollect('previousSibling');
+  },
+
+  nextSiblings: function(element) {
+    return $(element).recursivelyCollect('nextSibling');
+  },
+
+  siblings: function(element) {
+    element = $(element);
+    return element.previousSiblings().reverse().concat(element.nextSiblings());
+  },
+
+  match: function(element, selector) {
+    if (typeof selector == 'string')
+      selector = new Selector(selector);
+    return selector.match($(element));
+  },
+
+  up: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(element.parentNode);
+    var ancestors = element.ancestors();
+    return expression ? Selector.findElement(ancestors, expression, index) :
+      ancestors[index || 0];
+  },
+
+  down: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return element.firstDescendant();
+    var descendants = element.descendants();
+    return expression ? Selector.findElement(descendants, expression, index) :
+      descendants[index || 0];
+  },
+
+  previous: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
+    var previousSiblings = element.previousSiblings();
+    return expression ? Selector.findElement(previousSiblings, expression, index) :
+      previousSiblings[index || 0];
+  },
+
+  next: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
+    var nextSiblings = element.nextSiblings();
+    return expression ? Selector.findElement(nextSiblings, expression, index) :
+      nextSiblings[index || 0];
+  },
+
+  getElementsBySelector: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element, args);
+  },
+
+  getElementsByClassName: function(element, className) {
+    return document.getElementsByClassName(className, element);
+  },
+
+  readAttribute: function(element, name) {
+    element = $(element);
+    if (Prototype.Browser.IE) {
+      if (!element.attributes) return null;
+      var t = Element._attributeTranslations;
+      if (t.values[name]) return t.values[name](element, name);
+      if (t.names[name])  name = t.names[name];
+      var attribute = element.attributes[name];
+      return attribute ? attribute.nodeValue : null;
+    }
+    return element.getAttribute(name);
+  },
+
+  getHeight: function(element) {
+    return $(element).getDimensions().height;
+  },
+
+  getWidth: function(element) {
+    return $(element).getDimensions().width;
+  },
+
+  classNames: function(element) {
+    return new Element.ClassNames(element);
+  },
+
+  hasClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    var elementClassName = element.className;
+    if (elementClassName.length == 0) return false;
+    if (elementClassName == className ||
+        elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
+      return true;
+    return false;
+  },
+
+  addClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element).add(className);
+    return element;
+  },
+
+  removeClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element).remove(className);
+    return element;
+  },
+
+  toggleClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    Element.classNames(element)[element.hasClassName(className) ? 'remove' : 'add'](className);
+    return element;
+  },
+
+  observe: function() {
+    Event.observe.apply(Event, arguments);
+    return $A(arguments).first();
+  },
+
+  stopObserving: function() {
+    Event.stopObserving.apply(Event, arguments);
+    return $A(arguments).first();
+  },
+
+  // removes whitespace-only text node children
+  cleanWhitespace: function(element) {
+    element = $(element);
+    var node = element.firstChild;
+    while (node) {
+      var nextNode = node.nextSibling;
+      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
+        element.removeChild(node);
+      node = nextNode;
+    }
+    return element;
+  },
+
+  empty: function(element) {
+    return $(element).innerHTML.blank();
+  },
+
+  descendantOf: function(element, ancestor) {
+    element = $(element), ancestor = $(ancestor);
+    while (element = element.parentNode)
+      if (element == ancestor) return true;
+    return false;
+  },
+
+  scrollTo: function(element) {
+    element = $(element);
+    var pos = Position.cumulativeOffset(element);
+    window.scrollTo(pos[0], pos[1]);
+    return element;
+  },
+
+  getStyle: function(element, style) {
+    element = $(element);
+    style = style == 'float' ? 'cssFloat' : style.camelize();
+    var value = element.style[style];
+    if (!value) {
+      var css = document.defaultView.getComputedStyle(element, null);
+      value = css ? css[style] : null;
+    }
+    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
+    return value == 'auto' ? null : value;
+  },
+
+  getOpacity: function(element) {
+    return $(element).getStyle('opacity');
+  },
+
+  setStyle: function(element, styles, camelized) {
+    element = $(element);
+    var elementStyle = element.style;
+
+    for (var property in styles)
+      if (property == 'opacity') element.setOpacity(styles[property])
+      else
+        elementStyle[(property == 'float' || property == 'cssFloat') ?
+          (elementStyle.styleFloat === undefined ? 'cssFloat' : 'styleFloat') :
+          (camelized ? property : property.camelize())] = styles[property];
+
+    return element;
+  },
+
+  setOpacity: function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1 || value === '') ? '' :
+      (value < 0.00001) ? 0 : value;
+    return element;
+  },
+
+  getDimensions: function(element) {
+    element = $(element);
+    var display = $(element).getStyle('display');
+    if (display != 'none' && display != null) // Safari bug
+      return {width: element.offsetWidth, height: element.offsetHeight};
+
+    // All *Width and *Height properties give 0 on elements with display none,
+    // so enable the element temporarily
+    var els = element.style;
+    var originalVisibility = els.visibility;
+    var originalPosition = els.position;
+    var originalDisplay = els.display;
+    els.visibility = 'hidden';
+    els.position = 'absolute';
+    els.display = 'block';
+    var originalWidth = element.clientWidth;
+    var originalHeight = element.clientHeight;
+    els.display = originalDisplay;
+    els.position = originalPosition;
+    els.visibility = originalVisibility;
+    return {width: originalWidth, height: originalHeight};
+  },
+
+  makePositioned: function(element) {
+    element = $(element);
+    var pos = Element.getStyle(element, 'position');
+    if (pos == 'static' || !pos) {
+      element._madePositioned = true;
+      element.style.position = 'relative';
+      // Opera returns the offset relative to the positioning context, when an
+      // element is position relative but top and left have not been defined
+      if (window.opera) {
+        element.style.top = 0;
+        element.style.left = 0;
+      }
+    }
+    return element;
+  },
+
+  undoPositioned: function(element) {
+    element = $(element);
+    if (element._madePositioned) {
+      element._madePositioned = undefined;
+      element.style.position =
+        element.style.top =
+        element.style.left =
+        element.style.bottom =
+        element.style.right = '';
+    }
+    return element;
+  },
+
+  makeClipping: function(element) {
+    element = $(element);
+    if (element._overflow) return element;
+    element._overflow = element.style.overflow || 'auto';
+    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
+      element.style.overflow = 'hidden';
+    return element;
+  },
+
+  undoClipping: function(element) {
+    element = $(element);
+    if (!element._overflow) return element;
+    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+    element._overflow = null;
+    return element;
+  }
+};
+
+Object.extend(Element.Methods, {
+  childOf: Element.Methods.descendantOf,
+  childElements: Element.Methods.immediateDescendants
+});
+
+if (Prototype.Browser.Opera) {
+  Element.Methods._getStyle = Element.Methods.getStyle;
+  Element.Methods.getStyle = function(element, style) {
+    switch(style) {
+      case 'left':
+      case 'top':
+      case 'right':
+      case 'bottom':
+        if (Element._getStyle(element, 'position') == 'static') return null;
+      default: return Element._getStyle(element, style);
+    }
+  };
+}
+else if (Prototype.Browser.IE) {
+  Element.Methods.getStyle = function(element, style) {
+    element = $(element);
+    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
+    var value = element.style[style];
+    if (!value && element.currentStyle) value = element.currentStyle[style];
+
+    if (style == 'opacity') {
+      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
+        if (value[1]) return parseFloat(value[1]) / 100;
+      return 1.0;
+    }
+
+    if (value == 'auto') {
+      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
+        return element['offset'+style.capitalize()] + 'px';
+      return null;
+    }
+    return value;
+  };
+
+  Element.Methods.setOpacity = function(element, value) {
+    element = $(element);
+    var filter = element.getStyle('filter'), style = element.style;
+    if (value == 1 || value === '') {
+      style.filter = filter.replace(/alpha\([^\)]*\)/gi,'');
+      return element;
+    } else if (value < 0.00001) value = 0;
+    style.filter = filter.replace(/alpha\([^\)]*\)/gi, '') +
+      'alpha(opacity=' + (value * 100) + ')';
+    return element;
+  };
+
+  // IE is missing .innerHTML support for TABLE-related elements
+  Element.Methods.update = function(element, html) {
+    element = $(element);
+    html = typeof html == 'undefined' ? '' : html.toString();
+    var tagName = element.tagName.toUpperCase();
+    if (['THEAD','TBODY','TR','TD'].include(tagName)) {
+      var div = document.createElement('div');
+      switch (tagName) {
+        case 'THEAD':
+        case 'TBODY':
+          div.innerHTML = '<table><tbody>' +  html.stripScripts() + '</tbody></table>';
+          depth = 2;
+          break;
+        case 'TR':
+          div.innerHTML = '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>';
+          depth = 3;
+          break;
+        case 'TD':
+          div.innerHTML = '<table><tbody><tr><td>' +  html.stripScripts() + '</td></tr></tbody></table>';
+          depth = 4;
+      }
+      $A(element.childNodes).each(function(node) { element.removeChild(node) });
+      depth.times(function() { div = div.firstChild });
+      $A(div.childNodes).each(function(node) { element.appendChild(node) });
+    } else {
+      element.innerHTML = html.stripScripts();
+    }
+    setTimeout(function() { html.evalScripts() }, 10);
+    return element;
+  }
+}
+else if (Prototype.Browser.Gecko) {
+  Element.Methods.setOpacity = function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1) ? 0.999999 :
+      (value === '') ? '' : (value < 0.00001) ? 0 : value;
+    return element;
+  };
+}
+
+Element._attributeTranslations = {
+  names: {
+    colspan:   "colSpan",
+    rowspan:   "rowSpan",
+    valign:    "vAlign",
+    datetime:  "dateTime",
+    accesskey: "accessKey",
+    tabindex:  "tabIndex",
+    enctype:   "encType",
+    maxlength: "maxLength",
+    readonly:  "readOnly",
+    longdesc:  "longDesc"
+  },
+  values: {
+    _getAttr: function(element, attribute) {
+      return element.getAttribute(attribute, 2);
+    },
+    _flag: function(element, attribute) {
+      return $(element).hasAttribute(attribute) ? attribute : null;
+    },
+    style: function(element) {
+      return element.style.cssText.toLowerCase();
+    },
+    title: function(element) {
+      var node = element.getAttributeNode('title');
+      return node.specified ? node.nodeValue : null;
+    }
+  }
+};
+
+(function() {
+  Object.extend(this, {
+    href: this._getAttr,
+    src:  this._getAttr,
+    type: this._getAttr,
+    disabled: this._flag,
+    checked:  this._flag,
+    readonly: this._flag,
+    multiple: this._flag
+  });
+}).call(Element._attributeTranslations.values);
+
+Element.Methods.Simulated = {
+  hasAttribute: function(element, attribute) {
+    var t = Element._attributeTranslations, node;
+    attribute = t.names[attribute] || attribute;
+    node = $(element).getAttributeNode(attribute);
+    return node && node.specified;
+  }
+};
+
+Element.Methods.ByTag = {};
+
+Object.extend(Element, Element.Methods);
+
+if (!Prototype.BrowserFeatures.ElementExtensions &&
+ document.createElement('div').__proto__) {
+  window.HTMLElement = {};
+  window.HTMLElement.prototype = document.createElement('div').__proto__;
+  Prototype.BrowserFeatures.ElementExtensions = true;
+}
+
+Element.hasAttribute = function(element, attribute) {
+  if (element.hasAttribute) return element.hasAttribute(attribute);
+  return Element.Methods.Simulated.hasAttribute(element, attribute);
+};
+
+Element.addMethods = function(methods) {
+  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
+
+  if (!methods) {
+    Object.extend(Form, Form.Methods);
+    Object.extend(Form.Element, Form.Element.Methods);
+    Object.extend(Element.Methods.ByTag, {
+      "FORM":     Object.clone(Form.Methods),
+      "INPUT":    Object.clone(Form.Element.Methods),
+      "SELECT":   Object.clone(Form.Element.Methods),
+      "TEXTAREA": Object.clone(Form.Element.Methods)
+    });
+  }
+
+  if (arguments.length == 2) {
+    var tagName = methods;
+    methods = arguments[1];
+  }
+
+  if (!tagName) Object.extend(Element.Methods, methods || {});
+  else {
+    if (tagName.constructor == Array) tagName.each(extend);
+    else extend(tagName);
+  }
+
+  function extend(tagName) {
+    tagName = tagName.toUpperCase();
+    if (!Element.Methods.ByTag[tagName])
+      Element.Methods.ByTag[tagName] = {};
+    Object.extend(Element.Methods.ByTag[tagName], methods);
+  }
+
+  function copy(methods, destination, onlyIfAbsent) {
+    onlyIfAbsent = onlyIfAbsent || false;
+    var cache = Element.extend.cache;
+    for (var property in methods) {
+      var value = methods[property];
+      if (!onlyIfAbsent || !(property in destination))
+        destination[property] = cache.findOrStore(value);
+    }
+  }
+
+  function findDOMClass(tagName) {
+    var klass;
+    var trans = {
+      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
+      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
+      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
+      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
+      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
+      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
+      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
+      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
+      "FrameSet", "IFRAME": "IFrame"
+    };
+    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
+    if (window[klass]) return window[klass];
+    klass = 'HTML' + tagName + 'Element';
+    if (window[klass]) return window[klass];
+    klass = 'HTML' + tagName.capitalize() + 'Element';
+    if (window[klass]) return window[klass];
+
+    window[klass] = {};
+    window[klass].prototype = document.createElement(tagName).__proto__;
+    return window[klass];
+  }
+
+  if (F.ElementExtensions) {
+    copy(Element.Methods, HTMLElement.prototype);
+    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+  }
+
+  if (F.SpecificElementExtensions) {
+    for (var tag in Element.Methods.ByTag) {
+      var klass = findDOMClass(tag);
+      if (typeof klass == "undefined") continue;
+      copy(T[tag], klass.prototype);
+    }
+  }
+
+  Object.extend(Element, Element.Methods);
+  delete Element.ByTag;
+};
+
+var Toggle = { display: Element.toggle };
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.Insertion = function(adjacency) {
+  this.adjacency = adjacency;
+}
+
+Abstract.Insertion.prototype = {
+  initialize: function(element, content) {
+    this.element = $(element);
+    this.content = content.stripScripts();
+
+    if (this.adjacency && this.element.insertAdjacentHTML) {
+      try {
+        this.element.insertAdjacentHTML(this.adjacency, this.content);
+      } catch (e) {
+        var tagName = this.element.tagName.toUpperCase();
+        if (['TBODY', 'TR'].include(tagName)) {
+          this.insertContent(this.contentFromAnonymousTable());
+        } else {
+          throw e;
+        }
+      }
+    } else {
+      this.range = this.element.ownerDocument.createRange();
+      if (this.initializeRange) this.initializeRange();
+      this.insertContent([this.range.createContextualFragment(this.content)]);
+    }
+
+    setTimeout(function() {content.evalScripts()}, 10);
+  },
+
+  contentFromAnonymousTable: function() {
+    var div = document.createElement('div');
+    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
+    return $A(div.childNodes[0].childNodes[0].childNodes);
+  }
+}
+
+var Insertion = new Object();
+
+Insertion.Before = Class.create();
+Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
+  initializeRange: function() {
+    this.range.setStartBefore(this.element);
+  },
+
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.parentNode.insertBefore(fragment, this.element);
+    }).bind(this));
+  }
+});
+
+Insertion.Top = Class.create();
+Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
+  initializeRange: function() {
+    this.range.selectNodeContents(this.element);
+    this.range.collapse(true);
+  },
+
+  insertContent: function(fragments) {
+    fragments.reverse(false).each((function(fragment) {
+      this.element.insertBefore(fragment, this.element.firstChild);
+    }).bind(this));
+  }
+});
+
+Insertion.Bottom = Class.create();
+Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
+  initializeRange: function() {
+    this.range.selectNodeContents(this.element);
+    this.range.collapse(this.element);
+  },
+
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.appendChild(fragment);
+    }).bind(this));
+  }
+});
+
+Insertion.After = Class.create();
+Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
+  initializeRange: function() {
+    this.range.setStartAfter(this.element);
+  },
+
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.parentNode.insertBefore(fragment,
+        this.element.nextSibling);
+    }).bind(this));
+  }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+  initialize: function(element) {
+    this.element = $(element);
+  },
+
+  _each: function(iterator) {
+    this.element.className.split(/\s+/).select(function(name) {
+      return name.length > 0;
+    })._each(iterator);
+  },
+
+  set: function(className) {
+    this.element.className = className;
+  },
+
+  add: function(classNameToAdd) {
+    if (this.include(classNameToAdd)) return;
+    this.set($A(this).concat(classNameToAdd).join(' '));
+  },
+
+  remove: function(classNameToRemove) {
+    if (!this.include(classNameToRemove)) return;
+    this.set($A(this).without(classNameToRemove).join(' '));
+  },
+
+  toString: function() {
+    return $A(this).join(' ');
+  }
+};
+
+Object.extend(Element.ClassNames.prototype, Enumerable);
+/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
+ * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
+ * license.  Please see http://www.yui-ext.com/ for more information. */
+
+var Selector = Class.create();
+
+Selector.prototype = {
+  initialize: function(expression) {
+    this.expression = expression.strip();
+    this.compileMatcher();
+  },
+
+  compileMatcher: function() {
+    // Selectors with namespaced attributes can't use the XPath version
+    if (Prototype.BrowserFeatures.XPath && !(/\[[\w-]*?:/).test(this.expression))
+      return this.compileXPathMatcher();
+
+    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
+        c = Selector.criteria, le, p, m;
+
+    if (Selector._cache[e]) {
+      this.matcher = Selector._cache[e]; return;
+    }
+    this.matcher = ["this.matcher = function(root) {",
+                    "var r = root, h = Selector.handlers, c = false, n;"];
+
+    while (e && le != e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        p = ps[i];
+        if (m = e.match(p)) {
+          this.matcher.push(typeof c[i] == 'function' ? c[i](m) :
+    	      new Template(c[i]).evaluate(m));
+          e = e.replace(m[0], '');
+          break;
+        }
+      }
+    }
+
+    this.matcher.push("return h.unique(n);\n}");
+    eval(this.matcher.join('\n'));
+    Selector._cache[this.expression] = this.matcher;
+  },
+
+  compileXPathMatcher: function() {
+    var e = this.expression, ps = Selector.patterns,
+        x = Selector.xpath, le,  m;
+
+    if (Selector._cache[e]) {
+      this.xpath = Selector._cache[e]; return;
+    }
+
+    this.matcher = ['.//*'];
+    while (e && le != e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        if (m = e.match(ps[i])) {
+          this.matcher.push(typeof x[i] == 'function' ? x[i](m) :
+            new Template(x[i]).evaluate(m));
+          e = e.replace(m[0], '');
+          break;
+        }
+      }
+    }
+
+    this.xpath = this.matcher.join('');
+    Selector._cache[this.expression] = this.xpath;
+  },
+
+  findElements: function(root) {
+    root = root || document;
+    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
+    return this.matcher(root);
+  },
+
+  match: function(element) {
+    return this.findElements(document).include(element);
+  },
+
+  toString: function() {
+    return this.expression;
+  },
+
+  inspect: function() {
+    return "#<Selector:" + this.expression.inspect() + ">";
+  }
+};
+
+Object.extend(Selector, {
+  _cache: {},
+
+  xpath: {
+    descendant:   "//*",
+    child:        "/*",
+    adjacent:     "/following-sibling::*[1]",
+    laterSibling: '/following-sibling::*',
+    tagName:      function(m) {
+      if (m[1] == '*') return '';
+      return "[local-name()='" + m[1].toLowerCase() +
+             "' or local-name()='" + m[1].toUpperCase() + "']";
+    },
+    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
+    id:           "[@id='#{1}']",
+    attrPresence: "[@#{1}]",
+    attr: function(m) {
+      m[3] = m[5] || m[6];
+      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
+    },
+    pseudo: function(m) {
+      var h = Selector.xpath.pseudos[m[1]];
+      if (!h) return '';
+      if (typeof h === 'function') return h(m);
+      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
+    },
+    operators: {
+      '=':  "[@#{1}='#{3}']",
+      '!=': "[@#{1}!='#{3}']",
+      '^=': "[starts-with(@#{1}, '#{3}')]",
+      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
+      '*=': "[contains(@#{1}, '#{3}')]",
+      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
+      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
+    },
+    pseudos: {
+      'first-child': '[not(preceding-sibling::*)]',
+      'last-child':  '[not(following-sibling::*)]',
+      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
+      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
+      'checked':     "[@checked]",
+      'disabled':    "[@disabled]",
+      'enabled':     "[not(@disabled)]",
+      'not': function(m) {
+        var e = m[6], p = Selector.patterns,
+            x = Selector.xpath, le, m, v;
+
+        var exclusion = [];
+        while (e && le != e && (/\S/).test(e)) {
+          le = e;
+          for (var i in p) {
+            if (m = e.match(p[i])) {
+              v = typeof x[i] == 'function' ? x[i](m) : new Template(x[i]).evaluate(m);
+              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
+              e = e.replace(m[0], '');
+              break;
+            }
+          }
+        }
+        return "[not(" + exclusion.join(" and ") + ")]";
+      },
+      'nth-child':      function(m) {
+        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
+      },
+      'nth-last-child': function(m) {
+        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
+      },
+      'nth-of-type':    function(m) {
+        return Selector.xpath.pseudos.nth("position() ", m);
+      },
+      'nth-last-of-type': function(m) {
+        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
+      },
+      'first-of-type':  function(m) {
+        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
+      },
+      'last-of-type':   function(m) {
+        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
+      },
+      'only-of-type':   function(m) {
+        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
+      },
+      nth: function(fragment, m) {
+        var mm, formula = m[6], predicate;
+        if (formula == 'even') formula = '2n+0';
+        if (formula == 'odd')  formula = '2n+1';
+        if (mm = formula.match(/^(\d+)$/)) // digit only
+          return '[' + fragment + "= " + mm[1] + ']';
+        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+          if (mm[1] == "-") mm[1] = -1;
+          var a = mm[1] ? Number(mm[1]) : 1;
+          var b = mm[2] ? Number(mm[2]) : 0;
+          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
+          "((#{fragment} - #{b}) div #{a} >= 0)]";
+          return new Template(predicate).evaluate({
+            fragment: fragment, a: a, b: b });
+        }
+      }
+    }
+  },
+
+  criteria: {
+    tagName:      'n = h.tagName(n, r, "#{1}", c);   c = false;',
+    className:    'n = h.className(n, r, "#{1}", c); c = false;',
+    id:           'n = h.id(n, r, "#{1}", c);        c = false;',
+    attrPresence: 'n = h.attrPresence(n, r, "#{1}"); c = false;',
+    attr: function(m) {
+      m[3] = (m[5] || m[6]);
+      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;').evaluate(m);
+    },
+    pseudo:       function(m) {
+      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
+      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
+    },
+    descendant:   'c = "descendant";',
+    child:        'c = "child";',
+    adjacent:     'c = "adjacent";',
+    laterSibling: 'c = "laterSibling";'
+  },
+
+  patterns: {
+    // combinators must be listed first
+    // (and descendant needs to be last combinator)
+    laterSibling: /^\s*~\s*/,
+    child:        /^\s*>\s*/,
+    adjacent:     /^\s*\+\s*/,
+    descendant:   /^\s/,
+
+    // selectors follow
+    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
+    id:           /^#([\w\-\*]+)(\b|$)/,
+    className:    /^\.([\w\-\*]+)(\b|$)/,
+    pseudo:       /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|\s|(?=:))/,
+    attrPresence: /^\[([\w]+)\]/,
+    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\]]*?)\4|([^'"][^\]]*?)))?\]/
+  },
+
+  handlers: {
+    // UTILITY FUNCTIONS
+    // joins two collections
+    concat: function(a, b) {
+      for (var i = 0, node; node = b[i]; i++)
+        a.push(node);
+      return a;
+    },
+
+    // marks an array of nodes for counting
+    mark: function(nodes) {
+      for (var i = 0, node; node = nodes[i]; i++)
+        node._counted = true;
+      return nodes;
+    },
+
+    unmark: function(nodes) {
+      for (var i = 0, node; node = nodes[i]; i++)
+        node._counted = undefined;
+      return nodes;
+    },
+
+    // mark each child node with its position (for nth calls)
+    // "ofType" flag indicates whether we're indexing for nth-of-type
+    // rather than nth-child
+    index: function(parentNode, reverse, ofType) {
+      parentNode._counted = true;
+      if (reverse) {
+        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
+          node = nodes[i];
+          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
+        }
+      } else {
+        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
+          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
+      }
+    },
+
+    // filters out duplicates and extends all nodes
+    unique: function(nodes) {
+      if (nodes.length == 0) return nodes;
+      var results = [], n;
+      for (var i = 0, l = nodes.length; i < l; i++)
+        if (!(n = nodes[i])._counted) {
+          n._counted = true;
+          results.push(Element.extend(n));
+        }
+      return Selector.handlers.unmark(results);
+    },
+
+    // COMBINATOR FUNCTIONS
+    descendant: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        h.concat(results, node.getElementsByTagName('*'));
+      return results;
+    },
+
+    child: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        for (var j = 0, children = [], child; child = node.childNodes[j]; j++)
+          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
+      }
+      return results;
+    },
+
+    adjacent: function(nodes) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        var next = this.nextElementSibling(node);
+        if (next) results.push(next);
+      }
+      return results;
+    },
+
+    laterSibling: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        h.concat(results, Element.nextSiblings(node));
+      return results;
+    },
+
+    nextElementSibling: function(node) {
+      while (node = node.nextSibling)
+	      if (node.nodeType == 1) return node;
+      return null;
+    },
+
+    previousElementSibling: function(node) {
+      while (node = node.previousSibling)
+        if (node.nodeType == 1) return node;
+      return null;
+    },
+
+    // TOKEN FUNCTIONS
+    tagName: function(nodes, root, tagName, combinator) {
+      tagName = tagName.toUpperCase();
+      var results = [], h = Selector.handlers;
+      if (nodes) {
+        if (combinator) {
+          // fastlane for ordinary descendant combinators
+          if (combinator == "descendant") {
+            for (var i = 0, node; node = nodes[i]; i++)
+              h.concat(results, node.getElementsByTagName(tagName));
+            return results;
+          } else nodes = this[combinator](nodes);
+          if (tagName == "*") return nodes;
+        }
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node.tagName.toUpperCase() == tagName) results.push(node);
+        return results;
+      } else return root.getElementsByTagName(tagName);
+    },
+
+    id: function(nodes, root, id, combinator) {
+      var targetNode = $(id), h = Selector.handlers;
+      if (!nodes && root == document) return targetNode ? [targetNode] : [];
+      if (nodes) {
+        if (combinator) {
+          if (combinator == 'child') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (targetNode.parentNode == node) return [targetNode];
+          } else if (combinator == 'descendant') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (Element.descendantOf(targetNode, node)) return [targetNode];
+          } else if (combinator == 'adjacent') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (Selector.handlers.previousElementSibling(targetNode) == node)
+                return [targetNode];
+          } else nodes = h[combinator](nodes);
+        }
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node == targetNode) return [targetNode];
+        return [];
+      }
+      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
+    },
+
+    className: function(nodes, root, className, combinator) {
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      return Selector.handlers.byClassName(nodes, root, className);
+    },
+
+    byClassName: function(nodes, root, className) {
+      if (!nodes) nodes = Selector.handlers.descendant([root]);
+      var needle = ' ' + className + ' ';
+      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
+        nodeClassName = node.className;
+        if (nodeClassName.length == 0) continue;
+        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
+          results.push(node);
+      }
+      return results;
+    },
+
+    attrPresence: function(nodes, root, attr) {
+      var results = [];
+      for (var i = 0, node; node = nodes[i]; i++)
+        if (Element.hasAttribute(node, attr)) results.push(node);
+      return results;
+    },
+
+    attr: function(nodes, root, attr, value, operator) {
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      var handler = Selector.operators[operator], results = [];
+      for (var i = 0, node; node = nodes[i]; i++) {
+        var nodeValue = Element.readAttribute(node, attr);
+        if (nodeValue === null) continue;
+        if (handler(nodeValue, value)) results.push(node);
+      }
+      return results;
+    },
+
+    pseudo: function(nodes, name, value, root, combinator) {
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      return Selector.pseudos[name](nodes, value, root);
+    }
+  },
+
+  pseudos: {
+    'first-child': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        if (Selector.handlers.previousElementSibling(node)) continue;
+          results.push(node);
+      }
+      return results;
+    },
+    'last-child': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        if (Selector.handlers.nextElementSibling(node)) continue;
+          results.push(node);
+      }
+      return results;
+    },
+    'only-child': function(nodes, value, root) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
+          results.push(node);
+      return results;
+    },
+    'nth-child':        function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root);
+    },
+    'nth-last-child':   function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, true);
+    },
+    'nth-of-type':      function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, false, true);
+    },
+    'nth-last-of-type': function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, true, true);
+    },
+    'first-of-type':    function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, "1", root, false, true);
+    },
+    'last-of-type':     function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, "1", root, true, true);
+    },
+    'only-of-type':     function(nodes, formula, root) {
+      var p = Selector.pseudos;
+      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
+    },
+
+    // handles the an+b logic
+    getIndices: function(a, b, total) {
+      if (a == 0) return b > 0 ? [b] : [];
+      return $R(1, total).inject([], function(memo, i) {
+        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
+        return memo;
+      });
+    },
+
+    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
+    nth: function(nodes, formula, root, reverse, ofType) {
+      if (nodes.length == 0) return [];
+      if (formula == 'even') formula = '2n+0';
+      if (formula == 'odd')  formula = '2n+1';
+      var h = Selector.handlers, results = [], indexed = [], m;
+      h.mark(nodes);
+      for (var i = 0, node; node = nodes[i]; i++) {
+        if (!node.parentNode._counted) {
+          h.index(node.parentNode, reverse, ofType);
+          indexed.push(node.parentNode);
+        }
+      }
+      if (formula.match(/^\d+$/)) { // just a number
+        formula = Number(formula);
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node.nodeIndex == formula) results.push(node);
+      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+        if (m[1] == "-") m[1] = -1;
+        var a = m[1] ? Number(m[1]) : 1;
+        var b = m[2] ? Number(m[2]) : 0;
+        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
+        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
+          for (var j = 0; j < l; j++)
+            if (node.nodeIndex == indices[j]) results.push(node);
+        }
+      }
+      h.unmark(nodes);
+      h.unmark(indexed);
+      return results;
+    },
+
+    'empty': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        // IE treats comments as element nodes
+        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
+        results.push(node);
+      }
+      return results;
+    },
+
+    'not': function(nodes, selector, root) {
+      var h = Selector.handlers, selectorType, m;
+      var exclusions = new Selector(selector).findElements(root);
+      h.mark(exclusions);
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!node._counted) results.push(node);
+      h.unmark(exclusions);
+      return results;
+    },
+
+    'enabled': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!node.disabled) results.push(node);
+      return results;
+    },
+
+    'disabled': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (node.disabled) results.push(node);
+      return results;
+    },
+
+    'checked': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (node.checked) results.push(node);
+      return results;
+    }
+  },
+
+  operators: {
+    '=':  function(nv, v) { return nv == v; },
+    '!=': function(nv, v) { return nv != v; },
+    '^=': function(nv, v) { return nv.startsWith(v); },
+    '$=': function(nv, v) { return nv.endsWith(v); },
+    '*=': function(nv, v) { return nv.include(v); },
+    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
+    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
+  },
+
+  matchElements: function(elements, expression) {
+    var matches = new Selector(expression).findElements(), h = Selector.handlers;
+    h.mark(matches);
+    for (var i = 0, results = [], element; element = elements[i]; i++)
+      if (element._counted) results.push(element);
+    h.unmark(matches);
+    return results;
+  },
+
+  findElement: function(elements, expression, index) {
+    if (typeof expression == 'number') {
+      index = expression; expression = false;
+    }
+    return Selector.matchElements(elements, expression || '*')[index || 0];
+  },
+
+  findChildElements: function(element, expressions) {
+    var exprs = expressions.join(','), expressions = [];
+    exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
+      expressions.push(m[1].strip());
+    });
+    var results = [], h = Selector.handlers;
+    for (var i = 0, l = expressions.length, selector; i < l; i++) {
+      selector = new Selector(expressions[i].strip());
+      h.concat(results, selector.findElements(element));
+    }
+    return (l > 1) ? h.unique(results) : results;
+  }
+});
+
+function $$() {
+  return Selector.findChildElements(document, $A(arguments));
+}
+var Form = {
+  reset: function(form) {
+    $(form).reset();
+    return form;
+  },
+
+  serializeElements: function(elements, getHash) {
+    var data = elements.inject({}, function(result, element) {
+      if (!element.disabled && element.name) {
+        var key = element.name, value = $(element).getValue();
+        if (value != null) {
+         	if (key in result) {
+            if (result[key].constructor != Array) result[key] = [result[key]];
+            result[key].push(value);
+          }
+          else result[key] = value;
+        }
+      }
+      return result;
+    });
+
+    return getHash ? data : Hash.toQueryString(data);
+  }
+};
+
+Form.Methods = {
+  serialize: function(form, getHash) {
+    return Form.serializeElements(Form.getElements(form), getHash);
+  },
+
+  getElements: function(form) {
+    return $A($(form).getElementsByTagName('*')).inject([],
+      function(elements, child) {
+        if (Form.Element.Serializers[child.tagName.toLowerCase()])
+          elements.push(Element.extend(child));
+        return elements;
+      }
+    );
+  },
+
+  getInputs: function(form, typeName, name) {
+    form = $(form);
+    var inputs = form.getElementsByTagName('input');
+
+    if (!typeName && !name) return $A(inputs).map(Element.extend);
+
+    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
+      var input = inputs[i];
+      if ((typeName && input.type != typeName) || (name && input.name != name))
+        continue;
+      matchingInputs.push(Element.extend(input));
+    }
+
+    return matchingInputs;
+  },
+
+  disable: function(form) {
+    form = $(form);
+    Form.getElements(form).invoke('disable');
+    return form;
+  },
+
+  enable: function(form) {
+    form = $(form);
+    Form.getElements(form).invoke('enable');
+    return form;
+  },
+
+  findFirstElement: function(form) {
+    return $(form).getElements().find(function(element) {
+      return element.type != 'hidden' && !element.disabled &&
+        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+    });
+  },
+
+  focusFirstElement: function(form) {
+    form = $(form);
+    form.findFirstElement().activate();
+    return form;
+  },
+
+  request: function(form, options) {
+    form = $(form), options = Object.clone(options || {});
+
+    var params = options.parameters;
+    options.parameters = form.serialize(true);
+
+    if (params) {
+      if (typeof params == 'string') params = params.toQueryParams();
+      Object.extend(options.parameters, params);
+    }
+
+    if (form.hasAttribute('method') && !options.method)
+      options.method = form.method;
+
+    return new Ajax.Request(form.readAttribute('action'), options);
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+  focus: function(element) {
+    $(element).focus();
+    return element;
+  },
+
+  select: function(element) {
+    $(element).select();
+    return element;
+  }
+}
+
+Form.Element.Methods = {
+  serialize: function(element) {
+    element = $(element);
+    if (!element.disabled && element.name) {
+      var value = element.getValue();
+      if (value != undefined) {
+        var pair = {};
+        pair[element.name] = value;
+        return Hash.toQueryString(pair);
+      }
+    }
+    return '';
+  },
+
+  getValue: function(element) {
+    element = $(element);
+    var method = element.tagName.toLowerCase();
+    return Form.Element.Serializers[method](element);
+  },
+
+  clear: function(element) {
+    $(element).value = '';
+    return element;
+  },
+
+  present: function(element) {
+    return $(element).value != '';
+  },
+
+  activate: function(element) {
+    element = $(element);
+    try {
+      element.focus();
+      if (element.select && (element.tagName.toLowerCase() != 'input' ||
+        !['button', 'reset', 'submit'].include(element.type)))
+        element.select();
+    } catch (e) {}
+    return element;
+  },
+
+  disable: function(element) {
+    element = $(element);
+    element.blur();
+    element.disabled = true;
+    return element;
+  },
+
+  enable: function(element) {
+    element = $(element);
+    element.disabled = false;
+    return element;
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Field = Form.Element;
+var $F = Form.Element.Methods.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element.Serializers = {
+  input: function(element) {
+    switch (element.type.toLowerCase()) {
+      case 'checkbox':
+      case 'radio':
+        return Form.Element.Serializers.inputSelector(element);
+      default:
+        return Form.Element.Serializers.textarea(element);
+    }
+  },
+
+  inputSelector: function(element) {
+    return element.checked ? element.value : null;
+  },
+
+  textarea: function(element) {
+    return element.value;
+  },
+
+  select: function(element) {
+    return this[element.type == 'select-one' ?
+      'selectOne' : 'selectMany'](element);
+  },
+
+  selectOne: function(element) {
+    var index = element.selectedIndex;
+    return index >= 0 ? this.optionValue(element.options[index]) : null;
+  },
+
+  selectMany: function(element) {
+    var values, length = element.length;
+    if (!length) return null;
+
+    for (var i = 0, values = []; i < length; i++) {
+      var opt = element.options[i];
+      if (opt.selected) values.push(this.optionValue(opt));
+    }
+    return values;
+  },
+
+  optionValue: function(opt) {
+    // extend element because hasAttribute may not be native
+    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = function() {}
+Abstract.TimedObserver.prototype = {
+  initialize: function(element, frequency, callback) {
+    this.frequency = frequency;
+    this.element   = $(element);
+    this.callback  = callback;
+
+    this.lastValue = this.getValue();
+    this.registerCallback();
+  },
+
+  registerCallback: function() {
+    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  onTimerEvent: function() {
+    var value = this.getValue();
+    var changed = ('string' == typeof this.lastValue && 'string' == typeof value
+      ? this.lastValue != value : String(this.lastValue) != String(value));
+    if (changed) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  }
+}
+
+Form.Element.Observer = Class.create();
+Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.Observer = Class.create();
+Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = function() {}
+Abstract.EventObserver.prototype = {
+  initialize: function(element, callback) {
+    this.element  = $(element);
+    this.callback = callback;
+
+    this.lastValue = this.getValue();
+    if (this.element.tagName.toLowerCase() == 'form')
+      this.registerFormCallbacks();
+    else
+      this.registerCallback(this.element);
+  },
+
+  onElementEvent: function() {
+    var value = this.getValue();
+    if (this.lastValue != value) {
+      this.callback(this.element, value);
+      this.lastValue = value;
+    }
+  },
+
+  registerFormCallbacks: function() {
+    Form.getElements(this.element).each(this.registerCallback.bind(this));
+  },
+
+  registerCallback: function(element) {
+    if (element.type) {
+      switch (element.type.toLowerCase()) {
+        case 'checkbox':
+        case 'radio':
+          Event.observe(element, 'click', this.onElementEvent.bind(this));
+          break;
+        default:
+          Event.observe(element, 'change', this.onElementEvent.bind(this));
+          break;
+      }
+    }
+  }
+}
+
+Form.Element.EventObserver = Class.create();
+Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+  getValue: function() {
+    return Form.Element.getValue(this.element);
+  }
+});
+
+Form.EventObserver = Class.create();
+Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+  getValue: function() {
+    return Form.serialize(this.element);
+  }
+});
+if (!window.Event) {
+  var Event = new Object();
+}
+
+Object.extend(Event, {
+  KEY_BACKSPACE: 8,
+  KEY_TAB:       9,
+  KEY_RETURN:   13,
+  KEY_ESC:      27,
+  KEY_LEFT:     37,
+  KEY_UP:       38,
+  KEY_RIGHT:    39,
+  KEY_DOWN:     40,
+  KEY_DELETE:   46,
+  KEY_HOME:     36,
+  KEY_END:      35,
+  KEY_PAGEUP:   33,
+  KEY_PAGEDOWN: 34,
+
+  element: function(event) {
+    return $(event.target || event.srcElement);
+  },
+
+  isLeftClick: function(event) {
+    return (((event.which) && (event.which == 1)) ||
+            ((event.button) && (event.button == 1)));
+  },
+
+  pointerX: function(event) {
+    return event.pageX || (event.clientX +
+      (document.documentElement.scrollLeft || document.body.scrollLeft));
+  },
+
+  pointerY: function(event) {
+    return event.pageY || (event.clientY +
+      (document.documentElement.scrollTop || document.body.scrollTop));
+  },
+
+  stop: function(event) {
+    if (event.preventDefault) {
+      event.preventDefault();
+      event.stopPropagation();
+    } else {
+      event.returnValue = false;
+      event.cancelBubble = true;
+    }
+  },
+
+  // find the first node with the given tagName, starting from the
+  // node the event was triggered on; traverses the DOM upwards
+  findElement: function(event, tagName) {
+    var element = Event.element(event);
+    while (element.parentNode && (!element.tagName ||
+        (element.tagName.toUpperCase() != tagName.toUpperCase())))
+      element = element.parentNode;
+    return element;
+  },
+
+  observers: false,
+
+  _observeAndCache: function(element, name, observer, useCapture) {
+    if (!this.observers) this.observers = [];
+    if (element.addEventListener) {
+      this.observers.push([element, name, observer, useCapture]);
+      element.addEventListener(name, observer, useCapture);
+    } else if (element.attachEvent) {
+      this.observers.push([element, name, observer, useCapture]);
+      element.attachEvent('on' + name, observer);
+    }
+  },
+
+  unloadCache: function() {
+    if (!Event.observers) return;
+    for (var i = 0, length = Event.observers.length; i < length; i++) {
+      Event.stopObserving.apply(this, Event.observers[i]);
+      Event.observers[i][0] = null;
+    }
+    Event.observers = false;
+  },
+
+  observe: function(element, name, observer, useCapture) {
+    element = $(element);
+    useCapture = useCapture || false;
+
+    if (name == 'keypress' &&
+      (Prototype.Browser.WebKit || element.attachEvent))
+      name = 'keydown';
+
+    Event._observeAndCache(element, name, observer, useCapture);
+  },
+
+  stopObserving: function(element, name, observer, useCapture) {
+    element = $(element);
+    useCapture = useCapture || false;
+
+    if (name == 'keypress' &&
+        (Prototype.Browser.WebKit || element.attachEvent))
+      name = 'keydown';
+
+    if (element.removeEventListener) {
+      element.removeEventListener(name, observer, useCapture);
+    } else if (element.detachEvent) {
+      try {
+        element.detachEvent('on' + name, observer);
+      } catch (e) {}
+    }
+  }
+});
+
+/* prevent memory leaks in IE */
+if (Prototype.Browser.IE)
+  Event.observe(window, 'unload', Event.unloadCache, false);
+var Position = {
+  // set to true if needed, warning: firefox performance problems
+  // NOT neeeded for page scrolling, only if draggable contained in
+  // scrollable elements
+  includeScrollOffsets: false,
+
+  // must be called before calling withinIncludingScrolloffset, every time the
+  // page is scrolled
+  prepare: function() {
+    this.deltaX =  window.pageXOffset
+                || document.documentElement.scrollLeft
+                || document.body.scrollLeft
+                || 0;
+    this.deltaY =  window.pageYOffset
+                || document.documentElement.scrollTop
+                || document.body.scrollTop
+                || 0;
+  },
+
+  realOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.scrollTop  || 0;
+      valueL += element.scrollLeft || 0;
+      element = element.parentNode;
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  cumulativeOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  positionedOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+      if (element) {
+        if(element.tagName=='BODY') break;
+        var p = Element.getStyle(element, 'position');
+        if (p == 'relative' || p == 'absolute') break;
+      }
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  offsetParent: function(element) {
+    if (element.offsetParent) return element.offsetParent;
+    if (element == document.body) return element;
+
+    while ((element = element.parentNode) && element != document.body)
+      if (Element.getStyle(element, 'position') != 'static')
+        return element;
+
+    return document.body;
+  },
+
+  // caches x/y coordinate pair to use with overlap
+  within: function(element, x, y) {
+    if (this.includeScrollOffsets)
+      return this.withinIncludingScrolloffsets(element, x, y);
+    this.xcomp = x;
+    this.ycomp = y;
+    this.offset = this.cumulativeOffset(element);
+
+    return (y >= this.offset[1] &&
+            y <  this.offset[1] + element.offsetHeight &&
+            x >= this.offset[0] &&
+            x <  this.offset[0] + element.offsetWidth);
+  },
+
+  withinIncludingScrolloffsets: function(element, x, y) {
+    var offsetcache = this.realOffset(element);
+
+    this.xcomp = x + offsetcache[0] - this.deltaX;
+    this.ycomp = y + offsetcache[1] - this.deltaY;
+    this.offset = this.cumulativeOffset(element);
+
+    return (this.ycomp >= this.offset[1] &&
+            this.ycomp <  this.offset[1] + element.offsetHeight &&
+            this.xcomp >= this.offset[0] &&
+            this.xcomp <  this.offset[0] + element.offsetWidth);
+  },
+
+  // within must be called directly before
+  overlap: function(mode, element) {
+    if (!mode) return 0;
+    if (mode == 'vertical')
+      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
+        element.offsetHeight;
+    if (mode == 'horizontal')
+      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
+        element.offsetWidth;
+  },
+
+  page: function(forElement) {
+    var valueT = 0, valueL = 0;
+
+    var element = forElement;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+
+      // Safari fix
+      if (element.offsetParent == document.body)
+        if (Element.getStyle(element,'position')=='absolute') break;
+
+    } while (element = element.offsetParent);
+
+    element = forElement;
+    do {
+      if (!window.opera || element.tagName=='BODY') {
+        valueT -= element.scrollTop  || 0;
+        valueL -= element.scrollLeft || 0;
+      }
+    } while (element = element.parentNode);
+
+    return [valueL, valueT];
+  },
+
+  clone: function(source, target) {
+    var options = Object.extend({
+      setLeft:    true,
+      setTop:     true,
+      setWidth:   true,
+      setHeight:  true,
+      offsetTop:  0,
+      offsetLeft: 0
+    }, arguments[2] || {})
+
+    // find page position of source
+    source = $(source);
+    var p = Position.page(source);
+
+    // find coordinate system to use
+    target = $(target);
+    var delta = [0, 0];
+    var parent = null;
+    // delta [0,0] will do fine with position: fixed elements,
+    // position:absolute needs offsetParent deltas
+    if (Element.getStyle(target,'position') == 'absolute') {
+      parent = Position.offsetParent(target);
+      delta = Position.page(parent);
+    }
+
+    // correct by body offsets (fixes Safari)
+    if (parent == document.body) {
+      delta[0] -= document.body.offsetLeft;
+      delta[1] -= document.body.offsetTop;
+    }
+
+    // set position
+    if(options.setLeft)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
+    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
+    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';
+    if(options.setHeight) target.style.height = source.offsetHeight + 'px';
+  },
+
+  absolutize: function(element) {
+    element = $(element);
+    if (element.style.position == 'absolute') return;
+    Position.prepare();
+
+    var offsets = Position.positionedOffset(element);
+    var top     = offsets[1];
+    var left    = offsets[0];
+    var width   = element.clientWidth;
+    var height  = element.clientHeight;
+
+    element._originalLeft   = left - parseFloat(element.style.left  || 0);
+    element._originalTop    = top  - parseFloat(element.style.top || 0);
+    element._originalWidth  = element.style.width;
+    element._originalHeight = element.style.height;
+
+    element.style.position = 'absolute';
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.width  = width + 'px';
+    element.style.height = height + 'px';
+  },
+
+  relativize: function(element) {
+    element = $(element);
+    if (element.style.position == 'relative') return;
+    Position.prepare();
+
+    element.style.position = 'relative';
+    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
+    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.height = element._originalHeight;
+    element.style.width  = element._originalWidth;
+  }
+}
+
+// Safari returns margins on body which is incorrect if the child is absolutely
+// positioned.  For performance reasons, redefine Position.cumulativeOffset for
+// KHTML/WebKit only.
+if (Prototype.Browser.WebKit) {
+  Position.cumulativeOffset = function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      if (element.offsetParent == document.body)
+        if (Element.getStyle(element, 'position') == 'absolute') break;
+
+      element = element.offsetParent;
+    } while (element);
+
+    return [valueL, valueT];
+  }
+}
+
+Element.addMethods();
\ No newline at end of file
diff --git a/schedulecreator.php b/schedulecreator.php
new file mode 100644
--- /dev/null
+++ b/schedulecreator.php
@@ -0,0 +1,56 @@
+<?php
+
+include_once 'errors.php';
+include_once 'class.schedule.php';
+include_once 'class.class.php';
+include_once 'class.section.php';
+
+//**************************************************
+// ScheduleCreator.java	Author: Nathan Gelderloos
+// 
+// Creates a list of classes.
+//**************************************************
+
+   
+         $allClasses = new Schedule("Fall 2010");
+
+	  $allClasses->changeTitle("Demonstration :: SlatePermutate - Scheduler");
+      	
+         $allClasses->addClass("CS 104");
+         $allClasses->addSection("CS 104", "A", 1030, 1120, 24);
+      	
+         $allClasses->addClass("Engr 209");
+         $allClasses->addSection("Engr 209", "A", 1330, 1420, 1235);
+         $allClasses->addSection("Engr 209", "B", 1430, 1520, 1235);
+      	
+         $allClasses->addClass("Engr 209L");
+         $allClasses->addSection("Engr 209L", "A", 1830, 2120, 4);
+         $allClasses->addSection("Engr 209L", "B", 1830, 2120, 3);
+      	
+         $allClasses->addClass("Math 231");
+         $allClasses->addSection("Math 231", "A", 800, 850, 1235);
+      	
+         $allClasses->addClass("Phys 235");
+         $allClasses->addSection("Phys 235", "A", 900, 950, 135);
+         $allClasses->addSection("Phys 235", "B", 1130, 1220, 135);
+         $allClasses->addSection("Phys 235", "C", 1230, 1320, 135);
+      	
+         $allClasses->addClass("Phys 235L");
+         $allClasses->addSection("Phys 235L", "A", 1430, 1720, 1);
+         $allClasses->addSection("Phys 235L", "B", 1430, 1720, 3);
+         $allClasses->addSection("Phys 235L", "C", 830, 1120, 4);
+         $allClasses->addSection("Phys 235L", "D", 1230, 1520, 4);
+      	
+         $allClasses->addClass("Rel 131");
+         $allClasses->addSection("Rel 131", "A", 800, 850, 135);
+         $allClasses->addSection("Rel 131", "B", 900, 950, 135);
+         $allClasses->addSection("Rel 131", "C", 1330, 1420, 135);
+         $allClasses->addSection("Rel 131", "D", 1430, 1520, 135);
+         $allClasses->addSection("Rel 131", "E", 835, 950, 24);
+         $allClasses->addSection("Rel 131", "F", 1030, 1145, 24);
+         $allClasses->addSection("Rel 131", "G", 1205, 1320, 24);
+         $allClasses->addSection("Rel 131", "H", 1330, 1445, 24);
+      	       
+         $allClasses->findPossibilities();
+         $allClasses->writeoutTables();
+?>
\ No newline at end of file
diff --git a/somejavacode.php b/somejavacode.php
new file mode 100644
--- /dev/null
+++ b/somejavacode.php
@@ -0,0 +1,78 @@
+//**************************************************
+// Classes.java			Author: Nathan Gelderloos
+//
+// Represents a class.
+//**************************************************
+
+    public class Classes
+   {
+      private String name;
+      private Section[] sections;
+      private int nsections;
+      
+      private boolean DEBUG = false;
+   
+       public Classes(String n)
+      {
+         name = n;
+         sections = new Section[1];
+         nsections = 0;
+      }
+   
+   // Adds a new section to the class.
+       public void addSection(String l, int s, int e, int d)
+      {
+         checkSections();
+         sections[nsections] = new Section(l, s, e, d);
+         nsections++;
+      }
+      
+   // Makes sure there is still room in the array.
+   // This method should be called before
+   //   anything is added to the array.
+       private void checkSections()
+      {
+         if(sections.length == nsections)
+         {
+            Section[] result = new Section[nsections+1];
+            for(int i = 0; i < sections.length; i++)
+            {
+               result[i] = sections[i];
+            }
+            sections = result;
+         }
+      }
+   
+   // Returns the number of sections in the class.
+       public int getnsections()
+      {
+         return nsections;
+      }
+   
+   // Returns the desired section for analysis.
+       public Section getSection(int i)
+      {
+         Section result = sections[i];
+         return result;
+      }
+      
+       public int getStartTime(int i)
+      {
+         Section temp = sections[i];
+         return sections[i].getStartTime();
+      }
+   
+   // Sets the DEBUG variable to the desired setting.
+       public void setDEBUG(boolean debugger)
+      {
+         DEBUG = debugger;
+      }
+   
+   // Returns the name of the class.
+       public String getName()
+      {
+         return name;
+      }
+   
+   }
+ 
\ No newline at end of file
diff --git a/styles/general.css b/styles/general.css
new file mode 100644
--- /dev/null
+++ b/styles/general.css
@@ -0,0 +1,14 @@
+  body {
+    width: 80%;
+    margin:auto;
+    font-family: sans-serif;
+  }
+  #header {
+    text-align: left;
+    background: rgb(220,220,220); /* IE fallback */
+    background: rgba(200,200,200, .3);  
+  }
+  #footer {
+    text-align: right;
+    background: rgb(220,220,220); /* IE fallback */
+    background: rgba(200,200,200, .3);