function showMenu( menuName, visibility )
{

  if( visibility == "checkstatus")
  {
    if( document.getElementById(menuName).menuStatus == "" )
    {
      visibility = "hidden";
    }
    else
    {
      visibility = "";
    }
  }
  
  if( visibility != "" )
  {
    document.getElementById(menuName).style.visibility = visibility;
    document.getElementById(menuName).menuStatus = visibility;
  }
}


function delayHide( menuName )
{
  document.getElementById(menuName).menuStatus = '';
  setTimeout('showMenu(\'' + menuName +'\',\'checkstatus\')', 250); 
}