function ajax(){
	var xmlhttp=false;
	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
		   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			xmlhttp = false;
  		}
	}

	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}

function do_perComarca(dades,div){


	ajax=ajax();
	ajax.open("GET", dades);
	
	document.getElementById(div).innerHTML = "<img src='../img/loading.gif'> carregant...";
	
	ajax.onreadystatechange=function() {


		if (ajax.readyState==4) {
				document.getElementById("last").style.display = "none";
				document.getElementById(div).innerHTML = ajax.responseText;	
		}

	}
	ajax.send(null);
}