var XMLHttpRequestObject = false;
if (window.XMLHttpRequest) {
	XMLHttpRequestObject = new XMLHttpRequest();
} else if (window.ActiveXObject) {
	XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}

function getData(dataSource, divID){
	if(XMLHttpRequestObject) {
		var obj = document.getElementById(divID);
		XMLHttpRequestObject.open("GET", dataSource);
		XMLHttpRequestObject.onreadystatechange = function(){
			if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
				obj.innerHTML = XMLHttpRequestObject.responseText;
			}
		}
		XMLHttpRequestObject.send(null);
	}
}

function postData(dataSource, divID, arrValores){
	var XMLHttpRequestObject = false;
	if (window.XMLHttpRequest) {
		XMLHttpRequestObject = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if(XMLHttpRequestObject) {
		var obj = document.getElementById(divID);
		XMLHttpRequestObject.open("POST", dataSource);
		XMLHttpRequestObject.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
		XMLHttpRequestObject.onreadystatechange = function(){
			if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
				obj.innerHTML = XMLHttpRequestObject.responseText;
			}
		}
		var salida="";
		for (i=0;i<arrValores.length;i++){
			if (salida.length) salida+="&";
			salida+=arrValores[i][0]+"="+arrValores[i][1];
		}
		XMLHttpRequestObject.send(salida);
	}
}