setTimeout("BannerChangeBG()",7000);

 function BannerFadeIn() {
	opacity("banner",0,100,1000);
	setTimeout("BannerChangeBG()",7000);
	
 }
 function BannerChangeBG() {
	var rand = (Math.floor(Math.random()*6)+1)
	document.getElementById("bannerbg").style.background = "url(resources/banners/" + rand + ".gif)";
	opacity("banner",100,0,1000);
	setTimeout("BannerChangeIMG()",4000);
 }
 function BannerChangeIMG() {
	var rand = (Math.floor(Math.random()*6)+1);
	document.getElementById("banner").src = "resources/banners/" + rand + ".gif";
	setTimeout("BannerFadeIn()",3000);
 }

function AJAXRandomBanner()
{
var xmlHttp;
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("nbanner").innerHTML = xmlHttp.responseText;
      }
    }
  xmlHttp.open("GET","system/random_banner.php",true);
  xmlHttp.send(null);
}