add: tl.hideLoadingMessage(); 
context:     var fError = function(statusText, status, xmlhttp) {        alert("Failed to load data xml from " + url + "\n" + statusText);    };
meta: 4232	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4232/6eecb6a63f20551084335a2ba3ce689361931c1f/timeline.js/buggy/src/main/webapp/api/scripts/timeline.js