Here are a few plays I have done with the Xara Pop-up Hovers 1 & 3.

Again, I find Xara's presentation and explanation of its components very limited and limiting.
I simply added a Fade out CSS ClassName htmlclass="topimage" and played around by re-arranging the shapes Xara provided in these components.

I did this originally as neither of them work in a pop-up layer as they use MouseOff/MouseOver to do their thing.

'topimage' can be used on just about anything, not just images so use it to make all sorts of reveals.

CSS3 - Image cross fade.xar

Acorn