function bgrMenuSwitcher(opt)
{
  var xmlHttp;
  setBgrMenu(opt);
  try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
  catch (e)
  {
    // Internet Explorer
    try
    {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e)
      {
      try
      {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch (e)
      {
        alert("Your browser does not support AJAX!");
        return false;
      }
    }
  }
  xmlHttp.onreadystatechange=function()
  {
    if(xmlHttp.readyState==4)
    {
      document.getElementById("AjaxBgrMenu").innerHTML=xmlHttp.responseText;
    }
  }
  
  // Do some randomisation to stop IE cacheing things.
  var r = parseInt(Math.random() * 99999999);
  var url = "snippets/bgr-menu.inc.php";
  var modUrl = url + "?rand="+r;
  xmlHttp.open("GET",modUrl,true);
  xmlHttp.send(null);
}