1Ext.onReady(function(){
 2
 3   if (Ext.firefoxVersion >= 18) {
 4      var noArgs = [];
 5      Ext.override(Ext.Base, {
 6      callParent : function(args) {
 7         var method, superMethod = (method = this.callParent.caller) && (method.$previous || ((method = method.$owner ?
 8method :
 9method.caller) && method.$owner.superclass[method.$name]));
10
11         // Workarround for Firefox 18. I don't know why this works, but it does. Perhaps functions wich have
12         // a try-catch block are handled differently
13         try {
14         } catch (e) {
15         }
16
17         return superMethod.apply(this, args || noArgs);
18      }
19     });
20  }