Again, it looks fine to me, HorvatM... You can't expect KR155E to make workarounds for every out-of-date version of every browser. Just upgrade. The latest Opera is just as efficient as the 9.x series (and every other version; because Opera always has and always will completely rock

)
And about the font, well done, KR155E! Is the "script" you mentioned a tag for the forum that allows using the font in a post? That would be very cool, indeed. If, instead, it's a script that generates the HTML/CSS for the sprite font, I would still be interested.
To be honest, there are some characters I would also change. The seven seems a bit off, for one. Also, the kerning (spacing between letters) might be a little too small. I realize there isn't much space to play with in such a small font, though. Adding one pixel at such a size can sometimes be too much... In fact, it's very hard to make fonts look good at such a small size, especially without anti-aliasing (which is essentially sub-pixel rendering).
For the ampersand, I would suggest some of the other forms might be worth a try. There is the "backwards three" style that some people use. Or the one that looks like "Et".
I've started a vector version of the font in SketchUp, based on the logo in Hedgetrimmer's excellent cartridge model. It's going pretty well, but I've only got the letters and most of the digits. I'm having trouble with the four, and I'm not quite happy with the five, yet. Also, my method for distinguishing the zero from the "O" doesn't quite look right.
When I get done, I can fairly easily start making a TTF from it, by exporting to DXF and importing into my font editor (Font Creator). Eventually, I'd like to make a SketchUp plugin that exports TTFs directly (although they'd still have to be tweaked in a standard editor).