I know that I can use fonts like arial “for free”. But what if I want to use not a standard font ?
Is that something that a browser should support ?
Where I can check, for example, which fonts Firefox 3.6.3 supports ?
I would like, for example, to change the font of input text area.
Fonts aren’t supported by browsers; they’re supported by systems. Either your user has Comic Sans installed across their entire computer, or they don’t have it installed at all.
However, the new CSS3 spec allows you to distribute your own fonts with your webpage. It’s currently only supported by the latest versions of Firefox, Safari, Google Chrome, and Opera, though.
To some extent, though, this shouldn’t matter. You can embed the font, and users with the latest technology get to enjoy it, or else they get the fallback font. Beyond logos, your designs typically shouldn’t hinge on fonts entirely, right?