title: How to get the text shown in Firefox dialog box
body: <p>all,</p>
  
  <p>I'm writing a Firefox extension in order to detect phishing attempts. As a lot of phishing web sites show alert/prompt dialog box, I want to capture the text inside for detection. I searched google but still haven't figured out which service should I use for this purpose. Can someone help me with it?</p>
  
  <p>Thanks,</p>