rem: function createInstance( progid, iidName ) 
add: function createInstance( contractid, iidName ) 
context: function createInstance( progid, iidName )   {    var iid = Components.interfaces[iidName];    return Components.classes[ progid ].createInstance( iid );  }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/6cc70ebd6c97bd0b2fe48c31f579e855387ced9d/openLocation.js/buggy/xpfe/browser/resources/content/openLocation.js