var DGCurrID = "";
var DGCurrMenu;
var HideTimer = 0;

function DGShowSubMenu(ID)
{
   if (DGCurrID != ID) {
      try
      {        
         if (DGCurrID != "") {
            DGCurrMenu.style.visibility = 'hidden';
         }
         DGCurrMenu = document.getElementById(ID);
         DGCurrMenu.style.visibility = 'visible';
         DGCurrID = ID;
      }
      catch (e)
      {
         DGCurrID = "";
      }
      if (HideTimer) clearTimeout(HideTimer);
      HideTimer = setTimeout("DGHideMenus()",4000); // hide menus after 4 seconds
   }
}

function DGHideSubMenu(ID)
{
   try
   {        
      DGCurrMenu = document.getElementById(ID);
      DGCurrMenu.style.visibility = 'hidden';
      DGCurrID = "";
   }
   catch (e)
   {
      DGCurrID = "";
   }
}

function DGHideMenus()
{
  if (HideTimer) clearTimeout(HideTimer);
  if ( DGCurrID != "" &&
     ( DGCurrID=="dgArticles" || DGCurrID=="dgRankings"     || DGCurrID=="dgTeams" || 
       DGCurrID=="dgDepth"    || DGCurrID=="dgTrainingCamp" || DGCurrID=="dgMockDraft" )) {

     DGHideSubMenu(DGCurrID);
     DGCurrID = "";
  }
}