More info - I just remembered that under 7.0, when I did a custom header with HTML in it I forgot to end a hyper-link with an "</a>".
I whole bunch of the screen got underscored like a hyper-link when the cursor go tmove to the link.
I'll bet there is a "</a>" missing some where in the defination of the pop up box in the php code.
I just don't know where to look!!
Hope this helps.