title: How to check ready state for Firefox using RFT
body: <p>I have been working on a web app, and it was designed for Firefox only.
  The getProperty(".readyState") always return 4 >> READY even if the page is still loading.
  I already tried the following:
  - image comparison using Robot (NO LUCK)
  - waitForExistence</p>
  
  <p>readyState is an IE property and it seems it is not working properly using Firefox.</p>
  
  <p>any help from the experts are greatly appreciated. Thanks</p>