function rolo(img_id, img_src) {
	img_it=document.getElementById(img_id);
	img_it.src = img_src;
	bar=document.getElementById("userbar");
	bar.style.background = "#7acf1a url(images/bar_bg.gif)";
}
function rolh(img_id, img_src, nav_bg) {
	img_it=document.getElementById(img_id);
	img_it.src = img_src;
	bar=document.getElementById("userbar");
	bar.style.background = nav_bg+" url(images/bar_bg_h.png)";
}
function createRequestObject() {
	var req;
	if(window.XMLHttpRequest){
		// Firefox, Safari, Opera...
		req = new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		// Internet Explorer 5+
		req = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		// There is an error creating the object, redirect!
		alert('Problem creating the XMLHttpRequest object');
	}
	return req;
}
var http = createRequestObject();
function sendRequest(webpage) {
	// Open PHP script for requests
	http.open('get', webpage+'.php');
	http.onreadystatechange = handleResponse;
	http.send(null);
}

function handleResponse() {
	if(http.readyState == 4 && http.status == 200){
		// Text returned FROM the PHP script
		var response = http.responseText;
		if(response) {
			// UPDATE ajaxTest content
			//alert(response);
			document.getElementById("content").innerHTML = response;
		}
	}
}