DUAL SCRENE WINDOW IN JUST 2 STEPS

If you want to make the browser to open 2 pages at once like in the picture below:

Dual Screen

To make your browser like the picture above, you can simply use the script from javascript.
Following steps:
1. Open your browser (For test I use mozilla firefox browser.)

2. Enter the following javascript into your browser address:

javascript: finderonly = location.href; int3rnet = prompt ('Enter% 20URL% 201', finderonly); brows3r = prompt ('Enter% 20URL% 202', int3rnet); if (int3rnet & & brows3r) {F1nd = ' \ n '; F1nd + =' \ n '; F1nd +=' '; with (document) {write (F1nd); void (close ())}} else {void (null)}

3. If the message "Enter the URL 1", the contents of the URL you want.
Fill with (Example): http://www.yahoo.com

4. If the message "Enter the URL 2", the contents of the URL you want.
Fill with (Example): http://www.progeneconsult.com

Now you have a browser with dual screen.