function AE(elem, type, handle)
{
  if (elem.addEventListener)
    elem.addEventListener(type, handle, false);
  else if (elem.attachEvent)
    elem.attachEvent("on" + type, handle);
}

function ShowCart()
{
}

function HideCart()
{
}

function OnMove()
{
}

function SetVisibility(layer, on)
{
}