Netscape Easter Egg!
In the Netscape URL type "about:mozilla" (Without Parentheses). You should get some thing like:
And the beast shall come forth surrounded by a roiling cloud of vengeance. The house of the unbelievers shall be razed and they shall be scorched to the earth. Their tags shall blink until the end of days.
from The Book of Mozilla, 12:10
Also, try typing this "about:cache" (Without Parentheses).