//AJAX
function createXMLHTTP() {
	try {
		ajax = new ActiveXObject("Microsoft.XMLHTTP");
	} 
	catch(e) {
		try {
			ajax = new ActiveXObject("Msxml2.XMLHTTP");
			alert(ajax);
		}	
		catch(ex) {
			try {
				ajax = new XMLHttpRequest();
			}
			catch(exc) {
				alert("Esse browser não tem recursos para uso do Ajax");
				ajax = null;
			}
		}
		return ajax;
	}

	var arrSignatures = ["MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0","MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP","Microsoft.XMLHTTP"];

	for (var i=0; i < arrSignatures.length; i++) {
		try {
	  	var oRequest = new ActiveXObject(arrSignatures[i]);
  	  return oRequest;
		} 
		catch (oError) {
		}
	}
	throw new Error("MSXML is not installed on your system.");
} 

function fnAjaxCarregaQuadro(sQuadro) {
	
	document.all.divQuadro.innerHTML = "<p>Carregando, aguarde...</p>"

	var oHTTPRequest = createXMLHTTP(); 
	
	oHTTPRequest.open("post", "p_quadros.php", true);
	oHTTPRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");	
	oHTTPRequest.onreadystatechange=function() {
	
		if (oHTTPRequest.readyState==4){
			document.all.divQuadro.innerHTML = oHTTPRequest.responseText;
		}
	}
	oHTTPRequest.send("sQuadro=" + sQuadro);
}