var LastViewdItem = null;
  	function showMenu(menuId)
	{
		submenu = document.getElementById("subMenu"+menuId);
        hideMenu();
		if (submenu != null)
    	{
        	submenu.style.visibility = "visible";
			submenu.style.left = submenu.previousSibling.offsetLeft+'px';
			submenu.previousSibling.className = 'menuItemSelect';
			submenu.style.top = '37px';
        	LastViewdItem = submenu;
    	}
	}

	function hideMenu()
	{
		if (LastViewdItem != null)
        {
			LastViewdItem.previousSibling.className = 'menuItem';
			LastViewdItem.style.visibility = "hidden";
		}
	}