jsd.topLevelHook = null; if (fbs.DBG_STEP) ddd("unset topLevelHook\n");                                                                 /*@explore*/ 
    unhookTopLevel: function()    {        jsd.topLevelHook = null;		if (fbs.DBG_STEP) ddd("unset topLevelHook\n");                                                                 /*@explore*/    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/3835aa92aeca5d9b254d162faf350a4cccc0b8ca/firebug-service.js/buggy/extension/components/firebug-service.js