var uvars = location.search.substring(1);
var nv = uvars.split('&');
var url = new Object();
for(i = 0; i < nv.length; i++) {
  eq = nv[i].indexOf('=');
  url[nv[i].substring(0,eq).toLowerCase()] = unescape(nv[i].substring(eq + 1));
}