if (!data || data == "") { 
if (!data || data.length == 0) { 
function stringToXml( data, expectedErrno ){    if (!data || data == "") { // assuming time-out        throw new Components.Exception(            "Login failed. Invalid session ID.",            Components.interfaces.calIWcapErrors.WCAP_LOGIN_FAILED);    }    var xml = getDomParser().parseFromString(data, "text/xml");    checkWcapXmlErrno(xml, expectedErrno);    return xml;}
5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5872/ca9241eb70b9d37b5cc4c031f828e6dcfc7e37e7/calWcapRequest.js/buggy/calendar/providers/wcap/calWcapRequest.js