title: Advert as form submit button
body: <p>Is it possible to make an ad on a page the submit button to a form? I wanted to give users the option to wait a length of time and then click a button or if they clicked an ad it would instantly submit the form.</p>
  
  <p>The ads I am using are given as an <code>iframe</code>. I've tried placing a transparent <code>div</code> over top the ad. Javascript can detect that, but not the iframe due to cross site scripting I have learned.</p>