My form is here: http://maricopashuttle.com/non-airport-reservations.
I'm not sure when this problem started but it was recently. The next button does nothing in IE10, so I'd assume the same for IE8 and IE9.
I have been searching the forums and internet extensively to find the problem or a solution, and have tried the following: Changing the theme to default WP, disabling all plugins one by one, updating jQuery to latest version, making sure there is only 1 call to latest jQuery, testing form in preview mode. This problem occurs for all my forms on all pages.
Any help would be greatly appreciated!