function getPage(p)
{
	if(window.XMLHttpRequest) // FIREFOX
		xhr_object = new XMLHttpRequest();
	else if(window.ActiveXObject) // IE
		xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	else
		return(false);
	xhr_object.open("GET", p, false);
	xhr_object.send(null);
	if(xhr_object.readyState == 4) 
		return(xhr_object.responseText);
	else 
		return(false);
}

function carrega(tag,pag)
{
	conteudo = getPage(pag);
	document.getElementById(tag).innerHTML = conteudo;
}