Best online xhtml/css/etc editor/file manager?

A lot of the file managers that come with web hosting are pretty basic. Does anyone know of any out there that have color highlighting for xhtml/css syntax and the like? I do a lot of designing and updating on some projects while at work where I can’t install any software on the computers, so an online editor like the above would be great.

Incidentally, I have found a php editor called PHP Anywhere ( which is great for php syntax highlighting plus it can ftp to your server and edit directly :slight_smile: