var xmlhttp = false ;


if (!xmlhttp && typeof XMLHttpRequest != 'undefined')
    {
	try {
	    xmlhttp = new XMLHttpRequest ();
	}
	catch (e) {
	    xmlhttp = false}
    }


function myXMLHttpRequest ()
{
    var xmlhttplocal;
    try {
	xmlhttplocal = new ActiveXObject ("Msxml2.XMLHTTP")}
    catch (e) {
	try {
	    xmlhttplocal = new ActiveXObject ("Microsoft.XMLHTTP")}
	catch (E) {
	    xmlhttplocal = false;
	}
    }

    if (!xmlhttplocal && typeof XMLHttpRequest != 'undefined') {
	try {
	    var xmlhttplocal = new XMLHttpRequest ();
	}
	catch (e) {
	    var xmlhttplocal = false;
	}
    }
    return (xmlhttplocal);
}

var mnmxmlhttp = Array ();
var mnmString = Array ();
var mnmPrevColor = Array ();
var responsestring = Array ();
var myxmlhttp = Array ();
var responseString = new String;

var i=0;
var ii = 0;
function ajax_update()
{
    url = "../zlivetwitter.php";
    target2 = document.getElementById ('content');
    ii = i++;

    var content = "i=" + ii ;

    mnmxmlhttp = new myXMLHttpRequest ();
    if (mnmxmlhttp) {
	mnmxmlhttp.open ("POST", url, true);
	mnmxmlhttp.setRequestHeader ('Content-Type',
				     'application/x-www-form-urlencoded');

	mnmxmlhttp.send (content);
	errormatch = new RegExp ("^ERROR:");

	target2 = document.getElementById ('content');

	mnmxmlhttp.onreadystatechange = function () {
	    if (mnmxmlhttp.readyState == 4) {
		mnmString = mnmxmlhttp.responseText;

		if (mnmString.match (errormatch)) {
		    mnmString = mnmString.substring (6, mnmString.length);

		    target = document.getElementById ('content');
		    target2.innerHTML = mnmString;

		} else {
		    target = document.getElementById ('content');
		    target2.innerHTML = mnmString;

		}
	    }
	}
    }
    setTimeout('ajax_update()', 20000);
}