var page;
function processPageChange() {
    // only if page shows "loaded"
    if (page.readyState == 4) {
        // only if "OK"
        if (page.status == 200) {
            document.getElementById("thePage").innerHTML = page.responsetext;
        } else {
            alert("There was a problem retrieving the XML data:\n" +
                page.statusText);
        }
    }
}
function loadXMLDoc(url) {
	page = false;
    // branch for native XMLHttpRequest object
    if(window.XMLHttpRequest) {
    	try {	
			page = new XMLHttpRequest(); 
        } catch(e) {
			page = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
       	try {
        	page = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
        	try {
          		page = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e) {
          		page = false;
			}
		}
	}
	if(page) {
		page.onreadystatechange = processPageChange; 
		page.open("GET", url, true);
		page.send(null); 
	}
}