function makeRequest(url,retfun) {

    var xmlhttp = false;

	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			xmlhttp = false;
		}
	}
	if (!xmlhttp && window.XMLHttpRequest) {
		try {
			xmlhttp = new XMLHttpRequest();
			if (xmlhttp.overrideMimeType) {
				xmlhttp.overrideMimeType('text/xml');
			}
		} catch (e) {
			xmlhttp=false;
		}
	}
	if (!xmlhttp && window.createRequest) {
		try {
			xmlhttp = window.createRequest();
		} catch (e) {
			xmlhttp=false;
		}
	}
	

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