var num=Math.floor (Math.random()*1000000);
var browser, version; var status = 1; var toc = new Array(); browser = navigator.appName; version = parseInt(navigator.appVersion);
if (browser == "Netscape" && version >= 3) status = 0;
else if (browser == "Microsoft Internet Explorer" && version >= 4) status = 0;

function ventana(nombre,name,propiedades) { v=window.open(nombre,name,propiedades); }