id_cat_atual = '';
function lista_itens(id_cat){
	id_cat_atual = "pagina"+id_cat;
	url="../dinamica/result_buffet.php?item="+id_cat;
	document.getElementById(id_cat_atual).innerHTML = "";
	ajax(url);
}
function ajax(url){
	req = null;
	if (window.XMLHttpRequest){
		req = new XMLHttpRequest();
		req.onreadystatechange = processReqChange;
		req.open("GET",url,true);
		req.send(null);
	}
	else if (window.ActiveXObject){
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req){
			req.onreadystatechange = processReqChange;
			req.open("GET",url,true);
			req.send();
		}
	}
}
function processReqChange(){
	if (req.readyState == 4){
		if (req.status ==200){
			
			
			document.getElementById(id_cat_atual).innerHTML = req.responseText;
		}
		else{
			alert("Houve um problema ao obter os dados:n" + req.statusText);
		}
	}
}