It's also possible to target specific pages, groups of web addresses, etc.

But that is just a fraction of what User JavaScript does. It also allows full control over everything related to JavaScript, on a site by site basis. (Here I can see webmasters foaming at the mouth! How dare Opera allow this?!) Scripts can be stopped altogether, made to run in customized ways (so a form that doesn't work in Opera can be tweaked) - the sky's the limit.

Cleary a knowledge of JavaScript is essential here.

I managed to finally meet an ambition of mine today, to turn off the italics on Slashdot! I cannot bear to read it for long periods of time. Finally, Opera 8 allowed me to adjust the site to make italic text normal. Phew! A vast improvement. Of course I could have gone further, and changed the colours, fonts, removed blocks I didn't like, even turned off the Google ads (oh no!).

If anyone wants to know the javascript I've used, I'll post it here. I won't show you how to block ads though, my code just changes a single style.

[edited by: Hester at 3:05 pm (utc) on April 19, 2005]