var http_request = false;

    function carrega_pagina(url) {

        http_request = false;

        if (window.XMLHttpRequest) { 
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
   
            }
        } else if (window.ActiveXObject) {
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }

        if (!http_request) {
            alert('Nao :( Funciona para seu brawser');
            return false;
        }
        http_request.onreadystatechange = alertas;
        //http_request.open('GET', url, true);
		http_request.open('GET', url + Nao_Cache(url), true);
        http_request.send(null);

    }
	
	
	function Nao_Cache(strURL) {
	var Nao_Cache = new Date().getTime(); 
	if(strURL.indexOf('?')==-1){var Separador='?'} else {var Separador='&'}
	return Separador + 'Nao_Cache=' + Nao_Cache
}


	function alertas() {
	if(document.getElementById('Mostra')) {
		var strHTML = '';
		var ObjContent = document.getElementById('Mostra');
		if (http_request.readyState == 1 || http_request.readyState == 2) {
			ObjContent.innerHTML = 	'<br /><br />' + 
									'<div align="center" style="height:300px;width:100%;">' + 
									'<img src="/imagens/loading.gif" width="32" height="32"/></div>'
		} else if (http_request.readyState == 4) {
			if (http_request.status == 200) {
				ObjContent.innerHTML = http_request.responseText;
			} else { 
				ObjContent.innerHTML = '<div align="center">Esta p&aacute;gina está indisposnível no momento.</div>';
			}
		}
	}
	
	
}