function navADL()
   {
   var w = document.mediaADL.course.selectedIndex;
   var url_add = document.mediaADL.course.options[w].value;
   window.location.href = url_add;
   }

  function navAUD()
   {
   var w = document.mediaAUD.course.selectedIndex;
  var url_add = document.mediaAUD.course.options[w].value;
  window.location.href = url_add;
  }
  
    function navFAQ()
   {
   var w = document.faq.category.selectedIndex;
  var url_add = document.faq.category.options[w].value;
  window.location.href = url_add;
  }