function nav()
   {
   var w = document.myform.mylist.selectedIndex;
   var url_add = document.myform.mylist.options[w].value;
   window.location.href = url_add;
   }
   
   
   
   function nav2()
   {
   var w = document.myform2.mylist2.selectedIndex;
   var url_add = document.myform2.mylist2.options[w].value;
   window.location.href = url_add;
   }