We create form pages with a form section and a thank-you (success) section on one page.  There is not a separate thank-you page.  An example can be seen at http://www.hermanmiller.com/solutions/living-office/living-office-digital-magazine/lo-magazine-stay-....  Initially, the form section is visible (has a style of display:block) and the success section is not ( style of display:none).  Upon successful completion of the form, the display styles of each section are reversed - the form section has a style of display:none and the success section has a style of display:block.  I would like to fire a pixel upon successful completion of the form.  How do I set up a rule in DTM to do this?  Note that successful completion of the form is not the same as clicking on the Submit button because some form validation is done at that time and if the validation fails I do not want the pixel to fire.  I only want it to fire if the submit is successful.  Thank you.