f = document.getElementById('track');
if (document.referrer) f.r.value = escape(document.referrer);
f.l.value = escape(window.location.href);
f.e.value = gup('e');
f.submit();

function gup( name ){
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}