Fix broken submission in firefox

- apparently have to define functions before using them...

lms/templates/problem.html

@@ -49,15 +49,16 @@
         return false;
       });
 
+      function toggleHint(e) {
+        $(this).parent().siblings().slideToggle();
+        $(this).parent().parent().toggleClass('open');
+        return false;
+      }
+
       if(!collapsibleSet) {
         collapsibleSet = true;
         $('.collapsible section').hide();
         $('.collapsible header a').bind('click', toggleHint);
-        function toggleHint(e) {
-          $(this).parent().siblings().slideToggle();
-          $(this).parent().parent().toggleClass('open');
-          return false;
-        }
       }      
     });
 </script>