CHAT for Mobile - best option?

Whats your best option for mobile chat?

I don't mean using mobile app, I mean chat on regular site that works on iphone (non flash).

Im using the new responsive theme by AndrewP which is looking really good... chat however, is still flash based by default so wont work on iphone.

anyone got suggestions?

Same problem and it's really a problem !

I already realized that i have to code this by myself.