<!-- 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 avis01(){
   if (ver == "correcta") {
      window.open('./f_abs_eristain.htm','','scrollbars=yes,resizable=yes,width=660,height=500')
   }else{
      parent.location.href="./indice.htm";
   }
}
function avis02(){
   if (ver == "correcta") {
      window.open('./f_norte_eristain.htm','','scrollbars=yes,resizable=yes,width=660,height=500')
   }else{
      parent.location.href="./indice.htm";
   }
}
function avis03(){
   if (ver == "correcta") {
      window.open('./f_inte_eristain.htm','','scrollbars=yes,resizable=yes,width=660,height=500')
   }else{
      parent.location.href="./indice.htm";
   }
}
function avis04(){
   if (ver == "correcta") {
      window.open('./f_hast_eristain.htm','','scrollbars=yes,resizable=yes,width=660,height=500')
   }else{
      parent.location.href="./indice.htm";
   }
}
//-- Fin codigo -->