appending a frame to item frame

[cyxui]

I wonder how to add a frame (panel, box donno the exact name) to the item frame.

For example when my mouse points to an Item, a frame is going to show up to display the detail information such as the value, larger picture and such. I want to be able to append some information on the bottom part. Which means I would also need to be able to know the information about the current item, ideally the item link of it.

Either XML/Lua implementation would be fine.

Thanks