popupBehavior

[barry]

1. Using the ASP.NET 2.0 AJAX Futures January CTP
2. Have a dropdownlist defined in a <asp:UpdatePane l
3. popupBehavior = $create(Sys.Pre view.UI.PopupBe havior, {'parentElement '
:$get('chooseDe partment'),'pos itioningMode'
:Sys.Preview.UI .PositioningMod e.BottomLeft}, null, null, toolTipDiv);
4. chooseDepartmen t is the dropdownlist and the toolTipDiv is the literal
that the hover will show
5. code is located in function pageLoad(sender , e)
6. problem is the following abend takes place when executing line 3
Sys.ArgumentUnd efinedException ; value cannot be undefined
Parameter name: type

thanks