function makeRequest(url) 
{

		http_request = false;

		if (window.XMLHttpRequest) { // Mozilla, Safari,...
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType) {
				http_request.overrideMimeType('text/xml');
			}
		} else if (window.ActiveXObject) { // IE
			try {
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			}
		}

		if (!http_request) {
			alert('Giving up :( Cannot create an XMLHTTP instance');
			return false;
		}
		http_request.onreadystatechange = setContents;
		http_request.open('GET', url, true);
		http_request.send(null);

}

function setContents() {

		if (http_request.readyState == 4) {
			if (http_request.status == 200) {
				alert('Thank you!');
			} else {
				alert('There was a problem with the request.');
			}
		}

	}