// Popup Revista
function popup(url) {
var largura=770;
var altura=580;
var e=(screen.width - largura)/2;
var t=(screen.height - altura)/2;

pp = window.open(url,"popup","top="+t+",left="+e+",width="+largura+",height="+altura);
if (window.focus) {pp.focus()}
//	return false;

}