open a firefox window innside a firefox window

Guyz many of us r using Mozzila firefox for internet browsing..

In this post i will show how to open a firefox window innside a firefox window:

Have U guyz ever tried opening Firefox...Inside firefox.....???

Well..try it out now...

just paste this code in address bar and hit Enter

chrome://browser/content/browser.xul

this trick hav no valuable use it is jst for fun.