Edit:
@ sgtevmckay
I was ready to cut & paste my answer to my friend , then I see your post, I will get back to you later ...
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@ vijayFH
Thanks!
I have put my nose in Firefox as well, by customizing the Firefox NASA theme & the Firefox extensions that I use to fit my needs & tastes!
And the Shadow on the earth it seems like there over there is a Space ship and this is it from i mean the Shadow amazing.
What you saw is Firefox displaying my personal "Home page" host in my computer.
I put and modify scripts for having the current moonphase, the lunar standard time, the current day & date, I have modify a script to show the local time but not with Font, with digit images Png, but the images are not done yet.
About the Earth image:
This is not really just an image, it's the current Day & Night zone on the Earth (updated every 20 minutes), it's not a spacecraft who make the shadow that you see ! :P
I have also my personal "Fast Dial" page appear when I click on the little FastDial icon, so I just need to click on the Website Logo image that I want to go! (see screenshot ...)
GM
My Firefox Theme: Night Shadow
Fast Dial screenshot: