rem: createInstance: function (aProgID, aIID) 
add: createInstance: function (aContractID, aIID) 
context:   createInstance: function (aProgID, aIID)    {      try        {          var iid = Components.interfaces[aIID];          return Components.classes[aProgID].createInstance(iid);        }      catch(e)        {        }        return null;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/6cc70ebd6c97bd0b2fe48c31f579e855387ced9d/nsJSComponentManager.js/clean/xpfe/global/resources/content/nsJSComponentManager.js