<!-- Inicio codigo

nombre = navigator.appName;
version = parseInt(navigator.appVersion);

if ((nombre == "Netscape" && version >= 3) || (nombre == "Microsoft Internet Explorer" && version >= 2)) ver = "correcta";
        else ver = "incorrecta";

function aviso(){
   if (ver == "correcta") {
      window.open('./indexarz.htm','','scrollbars=yes,resizable=yes,width=800,height=600')
   }else{
      parent.location.href="./index.htm";
   }
}

//-- Fin codigo -->