function fetch_object(idname)
{
 var my_obj = document.getElementById(idname);
 return my_obj;
}
function toggle_nav(obj)
{
 for (i = 1; i<= 7; i++ )
 {
  var sub_nav = fetch_object("zzjs_nav" + i);
  var sub_nav_index = fetch_object("zzjs_nav0");
  sub_nav_index.style.display = "none";
  if (obj == i)
  {
   sub_nav.style.display = "block";
  }
  else
  {
   sub_nav.style.display = "none";
  }
 }
}

function fetch1_object(idname)
{
 var my1_obj = document.getElementById(idname);
 return my1_obj;
}
function tab_nav(obj)
{
 for (i = 1; i<= 7; i++ )
 {
  var sub1_nav = fetch1_object("tab_nav" + i);
  var sub1_nav_index = fetch1_object("tab_nav0");
  sub1_nav_index.style.display = "none";
  if (obj == i)
  {
   sub1_nav.style.display = "block";
  }
  else
  {
   sub1_nav.style.display = "none";
  }
 }
}