return this.lineMap ? this.lineMap[lineNo] : false; 
if (!this.lineMap || !this.lineMap.complete) this.buildLineTable(); return this.lineMap[lineNo]; 
    getScriptByLineNumber: function(lineNo)    {        return this.lineMap ? this.lineMap[lineNo] : false;    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/76449ef4d8385610e64112c53410246cfda12c62/lib.js/buggy/extension/content/firebug/lib.js