function ajaxPing(urlFeed,target){
		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;
				}
			}
		}
		if(target) target.value='ajaxing...';

		function html_entity_decode(str) {
			var ta=document.createElement("textarea");
			ta.innerHTML=str.replace(/</g,"&lt;").replace(/>/g,"&gt;");
			return ta.value;
		}
		
		function stateChanged(){
			if(xmlHttp.readyState==4){
				if(target) target.value = html_entity_decode(xmlHttp.responseText);
				if(window.afterAjax) afterAjax(target);
			}
		}

		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",urlFeed+"&sid="+Math.random(),true);
		xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1");
		xmlHttp.send(null);
}