function ajaxCheckout(registered_postage)
{
	var xmlHttp = new GetXmlHttpObject();//Create a new instance of xmlHttp for each request
	//use session username
	xmlHttp.open("POST",'../checkout/checkout.php?registered_postage='+registered_postage+'&dummy_time='+new Date().getTime(),true);//Quick & dirty URL hack to overcome IE caching mechanism on the client side, might not work with POST
	xmlHttp.onreadystatechange=function(){
		if (xmlHttp.readyState==4)
		{
			var Resp = xmlHttp.responseText;
			var html = "";
			//var splitResp = Resp.split("|||");//splitResp is an array containing the splitted parts

			if(Resp=="OK") {
				self.parent.location.href='../user_account/user_account.php';
			} else {
				var splitResp = Resp.split("|||");//splitResp is an array containing the splitted parts
				for(i=0;i<splitResp.length;i++)
				{
					html += splitResp[i]+"<br>";
				}
				document.getElementById("divGrabbedItems").innerHTML = "";
				document.getElementById("divGrabbedItems").innerHTML = html;
			}
		}
	}
	xmlHttp.send(null)
}