restricted draggable area

I am experiencing a something peculiar with the DragOverlayExtender and DragPanelExtender. There seems to be a defined area where the panel can be placed. For example, there is extra white space at the bottom of the page; however, when i try to place the panel lower than the last control on the page, it pops back to it's last position.

Do I need to actually place empty panels around the page to allow for extra dragable area?

Thanks

-Mike

Add this to the page:

<style type="text/css">
body { height:100%; }
</style>

And you're good to go.