found it, its in the multi-level.php file. So you were right, when I comment that out, the pop-up appears to work, but after you click go, the listings aren't filtered to the city I chose, it stays the same as if I didn't chose a new city. So it is going through the motions of letting me choose a city (in my case) but does nothing. IE is still a huge browser market and I need this to work. Any other suggestions? Thanks.