diff --git a/scripts/displayTables.js b/scripts/displayTables.js
--- a/scripts/displayTables.js
+++ b/scripts/displayTables.js
@@ -1,9 +1,29 @@
-$(document).ready(function() {
+/**
+ * \brief
+ *   Handle changes to the input elements under #show-box.
+ */
+function show_box_change()
+{
+    var name = jQuery(this).attr('name');
+    if (name && name.indexOf('-'))
+	{
+	    /* convert from 'show-prof' back to 'prof' */
+	    var css_class = name.substr(name.indexOf('-') + 1);
+	    if (jQuery('#' + name + ':checked').size())
+		{
+		    jQuery('.' + css_class).show();
+		}
+	    else
+		{
+		    jQuery('.' + css_class).hide();
+		}
+	}
 
-function hideAllButFirst(){
-	jQuery('.week').hide();
-};
+    return false;
+}
 
-hideAllButFirst();
-
-}
\ No newline at end of file
+jQuery(document).ready( function()
+  {
+      jQuery('#show-box input').change(show_box_change);
+  }
+);