We'll respond shortly.
You can create a new <style> element and append it to the head. This should probably be avoided if you can help it.
If you simply want to toggle between 2 states, consider putting both sets of rules in the CSS and toggling a class on the body or other container.
*”Should I use BOSH for XMPP on the iPhone?”
Probably not. If you have a long-running low latency XMPP connection, you’ll probably want to use a socket from the CFNetwork package. That’s the most we know about iPhone development right now.