var hub;

	function showContent(url) {
		hub=GetXmlHttpObject();
		if (hub==null) {
			alert ("Browser does not support HTTP Request");
			return;
		}

		//var url='hub.php';
		hub.onreadystatechange=stateChanged;
		hub.open("GET",url,true);
		hub.send(null);
	}

	function stateChanged() {
		if (hub.readyState==4) {
			document.getElementById("content").innerHTML=hub.responseText;
			document.getElementById("forcedcontent").innerHTML = "";
		}
	}

	function GetXmlHttpObject() {
		if (window.XMLHttpRequest) {
			// code for IE7+, Firefox, Chrome, Opera, Safari
			return new XMLHttpRequest();
		}
		if (window.ActiveXObject) {
			// code for IE6, IE5
			return new ActiveXObject("Microsoft.XMLHTTP");
		}
		return null;
	}