<!-- FOUR STEPS TO INSTALL TOP WINDOW (popup-page.html):
1. Paste the coding into the HEAD of your "opener" HTML document
2. Copy the second coding into the BODY of your "opener" page
3. Create pop-up page and save as popup-page.html
4. Put the onBlur handler in the BODY of popup-page.html -->

<!-- STEP THREE: Create pop-up page - save as popup-page.html -->
<!-- STEP FOUR: Add onBlur handler to BODY of popup-page.html -->