function QString(qsParam) {
  nvString = "&" + window.location.search.substring(1, window.location.search.length) + "&";
  paramBegin = nvString.indexOf("&" + qsParam + "=");
  if (paramBegin != -1) {
    valBegin = (paramBegin*-1-qsParam.length-2)*-1;
    qsVal = nvString.substring(valBegin, nvString.indexOf("&", valBegin));
    if (qsVal != "") {return unescape(qsVal)}
     else {return ""}
  }
  else {return ""}
}