// JavaScript Document
// Versão 1.8 beta

var http_request = false;

function chama(url) {

	http_request = false;
	
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
	
		http_request = new XMLHttpRequest();
		
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
			// See note below about this line
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
			http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
	}
	http_request.onreadystatechange = alertContents;
	http_request.open('GET', url, true);
	http_request.send(null);
}
	
function alertContents() {
	if (http_request.readyState == 4) { 	
		if (http_request.status == 200) {
			reposta_ajax(http_request.responseText);
			//alert(http_request.responseText);
		} else {
			//alert('Um problema encontrado pagina nao encontrada.');
		};
	};
};