var request = { getParameter: _getParameter };

 function _getParameter(querystring)
   {
    var querystr = new Array();
    loc = window.location.search.substr(1).split('&');
    for (query in loc)
      {
       var q = loc[query].split('=');
       querystr[q[0]] = q[1];
      }
    return querystr[querystring];
  }