New zip code search feature not working?

Edit Subject

I'm a little confused about how this update works. I added zip codes to the selection, and no matter which zip code I choose it shows all listings in the selected city across all zip codes. Appears to be ignoring this field.

You can try it here: http://www.tempeagentnews.com

Note:: Since it appears to be taking awhile for a response, I've taken out the Zip code selection to avoid confusing people. Let me know if you want it back in to test it.