/*
 * Copyright 2003-2006, Peter Rowntree. All Rights Reserved.
 * http://www.hdyn.com/wr/common/contact.php?addr=pr
 * doesn't use decodeURIComponent (JS 1.5); expects URI-legal components ONLY.
 */

var g_queryItems=[];
buildQueryItems(window.location.search);

function buildQueryItems(s)
{
   if(s.length < 2)
      return;
   s=s.substring(1); //strip "?"
   var nvPairs=s.split("&");
   var onePair;
   for(var i=0; i < nvPairs.length; ++i)
   {
      s=nvPairs[i];
      onePair=s.split("=");
      g_queryItems[onePair[0]]=onePair.length > 1 ? onePair[1] : "";
   }
}

function getQueryItem(k)
{
   return typeof g_queryItems[k] == "undefined" ? null : g_queryItems[k];
}