Redirect to modal window

How comfortable are you with WordPress hooks and writing custom PHP? There is a hook on the submit button you can hook into to add a javascript action on it but you would need to write this code from scratch.

Here is an example of using the gform_submit_botton hook. Please note this example doesn't do what you want it to do, it's just a code example. This example changes the default input type to use the button element with an included span, popular for implementing the Sliding Door CSS technique. Your implementation would be different.

<?php
// filter the Gravity Forms button type
add_filter("gform_submit_button", "form_submit_button", 10, 2);
function form_submit_button($button, $form){
return "<button class='button' id='gform_submit_button_{$form["id"]}'><span>Submit</span></button>";
}
?>

yes, another example for just a single form ID is here.

http://forum.gravityhelp.com/topic/styling-the-submit-button-1#post-7367