function qtdmensagens(url) {

	ajax_qtdmensagens = ajaxInit();
	if(ajax_qtdmensagens) {
		ajax_qtdmensagens.open("GET", url + "includes/xml_qtdmensagens.php", true);
		ajax_qtdmensagens.onreadystatechange = function() {	   
			if(ajax_qtdmensagens.readyState == 4) {	     
				if(ajax_qtdmensagens.status == 200) {
	
					var xmldoc_qtdmensagens = ajax_qtdmensagens.responseXML;
	
					if(xmldoc_qtdmensagens.hasChildNodes()){
						var nos_qtdmensagens = xmldoc_qtdmensagens.getElementsByTagName('mensagens');
						var no_qtdmensagens = nos_qtdmensagens[0];
						var qtd = no_qtdmensagens.getAttribute("qtd");
						var qtd_txt = no_qtdmensagens.getAttribute("qtd_txt");
						
						t = "";
						if(qtd > 0){
							t = "<p><a href=\""+url+"cocamail/inbox.php\"><b>"+qtd_txt+"</b><br><br></p></a>";
						}
						
						document.getElementById("qtdmensagens").innerHTML = t;
						setTimeout("qtdmensagens('"+url+"');", 60000);
					}
	
				} else {
					document.getElementById("qtdmensagens").innerHTML = ajax_qtdmensagens.statusText;
					setTimeout("qtdmensagens('"+url+"');", 90000);
				}
			}
		}
		ajax_qtdmensagens.send(null);
	}
}