// JavaScript Document
function open1() {
var open1 =
window.open('pref_explain_es.html','','titlebar=yes,menubar=no,scrollbars=no,left=20,top=20,height=400,width=500,resizable=yes');
}
function open2() {
var open2 =
window.open('pref_explain_en.html','','titlebar=yes,menubar=no,scrollbars=no,left=20,top=25,height=400,width=500,resizable=yes');
}