Custom FBimage - Mousepointer?

How are you doing the custom image? The best way to do this is with the following code snippet, which uses an image and a normal href. That should cause the mouseover hand by default:
<a href="javascript:void(0);" onclick="jfbc.login.login_custom();"><img src="yourimage.jpg" /></a>

Try that out and let us know how it goes, and good luck!

Ahh.. I see we forgot the href=javascript.. bit. Sorry about that. I just updated the guide.

Glad we could help, and should you need anything else, just let us know!