function gethtm(url, id, is) {
    var doc = document.getElementById(id);
    doc.innerHTML='Loading...';
    var xmlhttp = false;
    if (doc != null) {
        xmlhttp = ajax_driv();
        xmlhttp.open("GET", url, true);
        xmlhttp.setRequestHeader("If-Modified-Since", "Thu, 01 Jan 1970 00:00:00 GMT");
        xmlhttp.onreadystatechange = function() {
            if (xmlhttp.readyState == 4) {
                if (is || is == null) {
                    doc.innerHTML=xmlhttp.responseText;
                } else {
                    eval(xmlhttp.responseText);
                };
            }
        }
        xmlhttp.send(null);
    }
}
function ajax_driv() {
    var xmlhttp;
    if (window.ActiveXObject) {
		try {
		  xmlhttp = new ActiveXObject("Msxml2.xmlhttp");
		} catch (e) {
		  try {
			xmlhttp = new ActiveXObject("Microsoft.xmlhttp");
		  } catch (e) {
			xmlhttp = false;
		  }
		}
    } else {
        xmlhttp = new XMLHttpRequest();
    }
    if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
        xmlhttp = new XMLHttpRequest();
    }
    return xmlhttp;
}