function objetoAjax(){

	var xmlhttp=false;

	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
		   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			xmlhttp = false;
  		}
	}

	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}
function abrir(cat)
{
var ajax=objetoAjax();
		ajax.open("GET", "catego.php?cat="+cat);
		ajax.onreadystatechange=function() 
		{ 
			
			if (ajax.readyState==4)
			{
				document.getElementById('novaleator').innerHTML=ajax.responseText;
			} 
		}
		ajax.send(null);
}
function bs(limit){
		divResultado = document.getElementById('bestseller');
		ajax=objetoAjax();
		ajax.open("GET", "best_sellers.php?limit="+limit);
		ajax.onreadystatechange=function() {
			if (ajax.readyState==4) {
				divResultado.innerHTML = ajax.responseText
			}
		}
		ajax.send(null);
}