function GetXmlHttpObject()
{
	var xmlHttp=null;
  	try
    {
    	// Firefox, Opera 8.0+, Safari
    	xmlHttp=new XMLHttpRequest();
    }
  	catch (e)
    {
    	// Internet Explorer
    	try
    	{
    		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    	}
    	catch (e)
    	{
    		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    	}
    }
  	return xmlHttp;
}

function bannerRotation()
{
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	{
  		alert ("Your browser does not support AJAX!");
  		return;
  	} 
	alert(bannerRank);
	//a=Math.round(document.getElementById('bannerHidden1').value);
	//rank=Math.round(document.getElementById(bannerRank).value);
  	//b=a+1;
  	//var property=document.getElementById('bannerHidden1').property;
  	//incrementValue=1;
  	//b=a+incrementValue;
  	//alert(bannerNumberValue);
  	//alert(b);
  	//bannerNumberValue=1;
  	var url="process.php";
	url+="?process=bannerRetrieve";
	//url+="&bannerNumber=" + b;
	//url+="&bannerRank=" + rank;
	url+="&sid="+Math.random();

	xmlHttp.onreadystatechange=function()
    {
    	if(xmlHttp.readyState==4)
        {
        	if (xmlHttp.status == 200)
        	{
       			//document.getElementById("banner1").style.zIndex=5;
        		document.getElementById("banner1").innerHTML=xmlHttp.responseText;
        		//document.getElementById('bannerHidden1').value=b;
        	}
        }
	}
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}