// JavaScript Document
<!--

/*
  name <cis>-- name of the desired variable 
  return string containing value <cs> of specified name <cis>
         or null if cookie name not exist
*/
function getValueFromUrl(name)
{
  var url = '' + this.location;
  var idx  = url.indexOf('?');
  if(idx==-1)
	return null;
  var query = "&" + url.substring(idx+1);
  var qs = query.toLowerCase();
  var key = "&" + name.toLowerCase() + "=";
  var begin = qs.indexOf(key);
  if(begin==-1)
	return null;
  else
    begin += key.length;
  var end = qs.indexOf("&", begin);
  if (end == -1)
    end = query.length;
  return unescape(query.substring(begin, end));
}
// -->