function abre(arquivo,alvo){
			
			var xmlHttp;
			try {
				// Firefox, Opera 8.0+, Safari
				xmlHttp=new XMLHttpRequest();
			}
			catch (e) {
				// Internet Explorer
				try {
					xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
				}
				catch (e){
					try {
						xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
					} 
					catch (e) {
						alert("Seu navegador não suporta AJAX. Atualize-o em www.getfirefox.com");
						return false;
					}
				}
			}
		    xmlHttp.onreadystatechange=function() {
				if(xmlHttp.readyState == 1) {
					document.getElementById(alvo).innerHTML = "<img src='images/loading.gif' align='absmiddle'>";
				}
				if(xmlHttp.readyState == 4) {
					document.getElementById(alvo).innerHTML = xmlHttp.responseText;
					
					$(document).ready(function(){ $("#PGInternas").show('slow'); });
}
		    }
		    xmlHttp.open("GET",arquivo,true);
		    xmlHttp.send(null);

}

function FechaInterna(){
	
$(document).ready(function(){ $("#PGInternas").hide('slow'); });

}