function objXMLHttp() {

	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		var objetoXMLHttp = new XMLHttpRequest();
		return objetoXMLHttp;
	} else if (window.ActiveXObject) { // IE

		var versoes = [ "MSXML2.XMLHttp.6.0", "MSXML2.XMLHttp.5.0",
		"MSXML2.XMLHttp.4.0","MSXML2.XMLHttp.3.0",
		"MSXML2.XMLHttp","Microsoft.XMLHttp"
		];

		for (var i = 0; i < versoes.length; i++) {
			try {
				var objetoXMLHttp = new ActiveXObject(versoes[i]);
				return objetoXMLHttp;
			} catch (ex) {
				//nada aqui
			}
		}
	}
	return false;
}

function getNoticias(){
	var ajax = objXMLHttp();
	var url = "titulo_noticias.php";
	
	/**
	* ajax  open
	*/
	ajax.open("POST",url,true);
	ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

	ajax.onreadystatechange = function() {

		if (ajax.readyState == 4) {
			if (ajax.status == 200) 
			{
				var ret = ajax.responseText;
				document.getElementById("ultimas_noticias_terra").innerHTML = ret;
			}
			else{
				alert("Erro: " + ajax.statusText);
			}
		}
	};
	ajax.send("");
	return false;
}

getNoticias();