//check the querystring to set up correct menu from last page
function QueryMenu (smenu) {
	if (smenu != "") {
		show(smenu);
	}
	else show();
}
//show or hide items of the menu
function show(id) {
var d = document.getElementById(id);
	for (var i = 1; i<=10; i++) {
		if (document.getElementById('smenu'+i)) {document.getElementById('smenu'+i).style.display='none';}
	}
if (d) {d.style.display='block';}
}

//get vars from URL parameters
function getURLParam(strParamName){
  var strReturn = "";
  var strHref = window.location.href;
  if ( strHref.indexOf("&") > -1 ){
    var strQueryString = strHref.substr(strHref.indexOf("&")).toLowerCase();
    var aQueryString = strQueryString.split("&");
    for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
      if (
aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
        var aParam = aQueryString[iParam].split("=");
        strReturn = aParam[1];
        break;
      }
    }
  }
  return strReturn;
}