/* Define o tempo */
	var waittime=500;

/* Variaveis internas*/
	document.getElementById("chatwindow").innerHTML = "<?php echo LENDO; ?>";
	var xmlhttp = false;
	var xmlhttp2 = false;
/*LENDO*/
function ajax_read(url) {
	if(window.XMLHttpRequest){
		xmlhttp=new XMLHttpRequest();
		if(xmlhttp.overrideMimeType){
			xmlhttp.overrideMimeType('text/xml');
		}
	} else if(window.ActiveXObject){
		try{
			xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
			try{
				xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e){
			}
		}
	}

	if(!xmlhttp) {
		alert('Prosseguindo :( Não foi possível criar a instancia XMLHTTP ');
		return false;
	}

	xmlhttp.onreadystatechange = function() {
	if (xmlhttp.readyState==4) {
		 if(xmlhttp.status==200){
			document.getElementById("chatwindow").innerHTML =unescape(xmlhttp.responseText);
			clearTimeout(intUpdate);
			zeit = new Date(); 
			ms = (zeit.getHours() * 24 * 60 * 1000) + (zeit.getMinutes() * 60 * 1000) + (zeit.getSeconds() * 1000) + zeit.getMilliseconds(); 
			intUpdate = setTimeout("ajax_read('retorna_on_off.php?x=" + ms + "')", waittime);
			}
			intUpdate = setTimeout("ajax_read('retorna_on_off.php?x=" + ms + "')", waittime);
		}
	
	}

	xmlhttp.open('GET',url,true);
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xmlhttp.send(null);
}
/* Começa ;) */
var intUpdate = setTimeout("ajax_read('retorna_on_off.php')", waittime);