// JavaScript Document
function opwin(theURL,winName,features) { 
  win=window.open(theURL,winName,features);
  win.focus();
}

// JavaScript Document
function chnglang () {

 var URI1 = document.idioma.select.options[document.idioma.select.selectedIndex].value;
 var obn  = document.location.href;
 //var unt  = parent.btm.location.href

 if (obn.charAt(obn.length-6)=="-") { 
 var obnExtr = obn.slice(0,(obn.length-6));
 var obnj  = obnExtr  + URI1 + ".htm";

// var untExtr = unt.slice(0,(unt.length-6));
// var untj  = untExtr  + URI1 + ".htm";
 }
 else{
 var obnExtr = obn.slice(0,(obn.length-4));
 var obnj  = obnExtr  + URI1 + ".htm";

// var untExtr = unt.slice(0,(unt.length-4));
// var untj  = untExtr  + URI1 + ".htm";

 } 
  document.location = obnj;
//  document.location = untj;
}