HTML

Tabindex can be a very helpful attribute when coding a complexly-structured web form or page for accessibility.  It basically tells a page the order in which elements should be highlighted when the tab key is used.  Remember, lots of assistive technologies use the tab input. 

While coding, I stumbled across this little nugget that I thought I'd share here, thanks to Edward Bilodeau (same guy, new blog).

How to get Firefox/Mac to recognize tab index

I just spent the better part of an hour trying to 
get tabindex to work under Firefox/Mac OS X.  
The solution lies not in Firefox, but in the Mac 
OS X preferences.

Apple Menu > System Preferences > 
Keyboard and Mouse > Keyboard Shortcuts and 
under "Full Keyboard Access" choose "All controls".

Sweet lord....

Link to original

Without this enabled, every page in your browser becomes a keyboard trap.  Very frustrating.  Thanks, Edward!

Programmers have daily close contact with web accessibility standards.  They can familiarize themselves with standards and code them directly into applications and tools, know what to look for in content editing tools and management systems, and help ensure that site designs are made accessible for everyone.