return lineNo - this.evalLineNumber + 1; 
return lineNo - this.offsetInEvalBuffer + 1; 
        scriptInfo.unshiftFromSourceBufferToScriptNumbering = function(lineNo)        {            return lineNo - this.evalLineNumber + 1;        }
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/657c1059e813834f821277cbe0ed6b432bead8b9/firebug-service.js/clean/extension/components/firebug-service.js