This appeared OUTSIDE my friend's fourth-story window today???

[shadowbox]

http://img204.imageshack.us/img204/9872/52444810101571275717729.jpg

?

[D-Day]

Err, this may seem like a stupid response....
But, could that possibly be the Sun shining through the window at sundown?

[Ariel]

Wow! I wonder what it is/means. Thank you for sharing. :)

[bluestflame]

would that be the round mandala like shape on the right hand side of the screen ?

[schneider]

i think she is talking about the strange round pattern with dots in it. very unusual.

[Ellisa]

I think it looks like a crop circle design.

[markoid]

Cool.. assuming it is actually on the glass, could you see it from other angles.. ie when the sunlight was not hitting at the angle shown?
No idea what it is though.

[avid]

could be the imprint of a 'suction' device used when raising the glass into position for installation?
Avid

[ED209]

That looks like the reflection of a shower head to me.

[Spiral]

Ditto the last two responces :)