Need a php calculator as inspired to the one below:
www.thedreamclean.com enter zip code "10001" to test.
-will allow several zip codes, to be entered, other zip codes will say service not available.
-once zip code is entered, goes to next page where they select details, estimate is shown and calculated based on size of home and additional services selected (radio boxes)
-will ask for address and payment info which is sent to email address