function clearCrumbs(){var xhr=createXHR();if(xhr){xhr.open("GET",webRoot+"clear.history",true);xhr.onreadystatechange=function(){if(xhr.readyState==4){if(xhr.responseText&&"cleared"==xhr.responseText){document.getElementById("container").removeChild(document.getElementById("crumbs"));}}};xhr.send(null);}return void(0);}