rem: appCore = Components .classes[ "component: .createInstance( Components.interfaces.nsIBrowserInstance ); if ( !appCore ) { alert( "Error creating browser instance\n" ); } 
add: appCore = Components .classes[ "component: .createInstance( Components.interfaces.nsIBrowserInstance ); if ( !appCore ) { dump("Error creating browser instance\n"); 
context: function createBrowserInstance(){    appCore = Components                .classes[ "component://netscape/appshell/component/browser/instance" ]                  .createInstance( Components.interfaces.nsIBrowserInstance );    if ( !appCore ) {        alert( "Error creating browser instance\n" );    }  }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/91fcc8d91dedf54935b9089b53e48e5ced55ded5/viewsource.js/buggy/xpfe/browser/resources/content/viewsource.js