add: tl.hideLoadingMessage(); 
context:     var fError = function(statusText, status, xmlhttp) {        alert("Failed to load data xml from " + url + "\n" + statusText);    };
meta: 7652	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7652/f317925303af45830955260c944c12ef9dbec19a/timeline.js/clean/src/main/webapp/api/scripts/timeline.js