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