function ventanaSecundaria (URL)
{
 var top = (window.screen.height / 2) - 315;	 
 var left = (window.screen.width / 2) - 400;

 window.open(URL,"","width=800, height=600, scrollbars=no, menubar=no, location=no, resizable=no,top="+top+",left="+left+""); 
} 

function sendIdioma(idioma)
{
  document.form_idioma.idioma.value = idioma;
  document.form_idioma.submit();
}