Drupal Webform Radio button slider?
You can add to your page something like

&lt;script&gt;
(function ($, Drupal, window, document, undefined) {
  $(document).ready(function() {
    $('.form-radio').click(function() { $('#edit-next').click(); });
  });
})(jQuery, Drupal, this, this.document);
&lt;/script&gt;


This is better done by adding a .js file via drupal_add_js(). Be aware that, since you are forcing your user to submit a form, you should provide a way to get back and resubmit a different choice.