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];
 }
}