title: JavaScript alert with 3 buttons
body: <p>I have a JavaScript alert button that appears on the website when a user is going to proceed to a signup page.  </p>
  
  <p>It looks something like this</p>
  
  <p>Would you like to proceed to the signup page?<br>
  &lt; OK > &lt; Cancel ></p>
  
  <p>Would it be possible to add a third button to the alert so that it looks like</p>
  
  <p>Would you like to proceed to the signup page?<br>
  &lt; More Info > &lt; OK > &lt; Cancel ></p>