Need help removing spray paint off my storefront window.?

I got most of it off but there's still a visible outline of the paint on my window....any ideas or tips in how to remove it completely?
Please help!
Thanks.

Answers:
Find the little punk who put it there and erase it off with his tongue. That'll school the little hellion.

Other answers:
scrape it with a razor blade or use paint thinner if that doesnt work
scrape it with a razor blade or use paint thinner if that doesnt work
have you tried gasoline?
use tarpin oil or nailpolish remover or kerosene oil and it will help get away the stains better still go to a hardware store and ask for a stain remover and they will help you
Paint thinner and a razor will work, but b careful not to scratch the glass
don't grafitti is the coolest way to paint buildings
razor blade

graffiti is the worst
Get you some windex and spray the window and the get a razor blade and scrape it off. If will come off really easy. Go to the paint section in like wal-mart and you can get a nice flat hand held one that comes with blades they are about a dollar a piece.
It'll take some work but a razor blade will remove most of it. If you get someSimple Green it'll probably take off the rest if it's only thin layers. Be careful not to use anything harsh that will stain the glass.
Paint, even spray paint, will come off of a window easily. Just get a razor scraper and some Windex. I have removed texture and paint from mirrors and windows. You just scrape it off with the razor scraper and clean it up with Windex. Sorry about your vandalization.
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