jQuery Forum

Hi all,

maybe it's a question already asked in the past, but I haven't been able to find a solution.
I'm able to load in my Firefox extensions jQuery, but I cannot do the same with jQuery UI... I receive this error:

Error: TypeError: div is null
Source file: chrome://myext/jquery-1.5.2.js
Row: 5653

I'm loading it with the following code:

1.     loadLibraries: function(context) {
           //load jQuery
           var loader = Components.classes["@mozilla.org/moz/jssubscript-loader;1"]
                                                        .getService(Components.interfaces.mozIJSSubScriptLoader);
           loader.loadSubScript("chrome://myext/jquery-1.5.2.js",context);
           var jQuery = window.jQuery.noConflict(true);
              
           if( typeof(jQuery.fn._init) == 'undefined') { jQuery.fn._init = jQuery.fn.init; }
          
           var $ = function(selector,context){ return new jQuery.fn.init(selector,context||myext.doc); };
           $.fn = $.prototype = jQuery.fn;
          
           myext.jQuery = jQuery;
           myext.$ = $;
   
           loader.loadSubScript("chrome://myext/jquery-ui-1.8.12.custom.min.js", jQuery);
           loader.loadSubScript("chrome://myext/jquery.tipsy.js", jQuery);
      
       }