function param(name){
  var regexParam = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexParam );
  var strURL = window.location.href;
  var results = regex.exec( strURL );
  if( results == null ) {
    return "";
  }
  else {
  	a = results[1];
    return a;
	}
}