function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    } else 
        expires = "";
    document.cookie = name + "=" + value+expires + "; path=/";
}

function changeLang( lang )
{
   if (document.langSelector) { 
      createCookie( 'language', lang);
      document.langSelector.submit();
   }
}