function request(url,ready){
	var xmlhttp;
		if (window.XMLHttpRequest) xmlhttp=new XMLHttpRequest();
		else if (window.ActiveXObject)  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
		else  alert("Your browser does not support XMLHTTP!");
	xmlhttp.onreadystatechange = function(){
		if (xmlhttp.readyState==4){
  			if (xmlhttp.status==200){
    			ready(xmlhttp.responseText);
  			 }else{
	   			alert("Problem retrieving XML data");
  			 }
		}
	}
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

var doAlert = function(value){ alert(value); }
var s = false;
var fillBanner = function(value){ 
	document.getElementById("banner").innerHTML = value; 
	/*if(!s){
		setTimeout("request(\"includes/ad/adv2.html\",fillBanner);",4000);
		s = true;
	}else{
		setTimeout("request(\"includes/ad/adv1.html\",fillBanner);",4000);
		s = false;
	}*/
}

//request("prodosec.php",doAlert);
function run_advertisement(){
	request("includes/ad/adv1.html",fillBanner);
}