>I'm using PopThis! and on the Options page it has separate checbox 'Prevent JavaScript resizing' in addition to popup blocking.

Ole macro! Well, that's new to me. It's just getting ridiculous at how many options those utilities would do to make our live miserable. Assuming that, then it would mean when he clicks on the button to open up the member's list such as the search for a pick list, it would not resize as well. Thanks for the info, I'll update my technical guidelines to reflect that possibility.