var req;

function LoadHTML(url) 
{
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processHTMLReqChange;
        req.open("GET", url, true);
        req.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processHTMLReqChange;
            req.open("GET", url, true);
            req.send();
        }
    }
}

function processHTMLReqChange() 
{
    // only if req shows "complete"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            LoadHTMLComplete(req.responseText)
        } else {
			LoadHTMLComplete(req.statusText)
        }
    }
}