Add this to the “How to make HTML behave more and more like Flash” pile.

Mandarin Design: CSS Opacity and Transparency

The article linked above has some great JavaScript- and non-JavaScript-based approaches to interactive opacity, and handles them cross-browser (well, on the PC, anyway).

Flash MP3 Player : This seems like a nice quick solution, with a JavaScript customization API and blog plugins!! Sweet!

Thanks to Darren from OpenRoad for the tip.

Another attempt at CSS rounded-corner dialogs using the sliding doors technique

Scott Schiller rocks out with some rad rounded corners. I used this on a client backend (those things are good for trying out stuff you wouldn’t unleash on the world yet) with an impressively high success rate. Simple to replicate, too.

The only bummer is you still need crazy extra HTML elements that muck up your otherwise clean and solid structure.

He mentions a JavaScript-based solution that he developed, which he now poo-poos. I think I’ll try it out anyway.

Projectseven.com - Tutorials: CSS Equal Height Columns

Fancy-dancy animated JavaScript. Uses JavaScript to separate behaviour from presentation (CSS) and structure (HTML). Nice.

This approach blows less hard than the “faux column” trick, which always reeked of single-pixel-GIF-era code hackery to me.