Navall

JSLint can also help you find error and mistakes, although it's quite harsh.

Here's a list of ports that are known to be used for various applications: http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

I'd not recommend using port 80 though, or any other port that are known to be used for obvious reasons. It wont cause any troubles for the clients though.

If you are looking for some help on implementation I've written a message list / box in C# and XNA which you can find here: https://github.com/albinodervall/Roguelike/blob/master/Roguelike/Interface/MessageList.cs

It uses some XNA specific stuff like measuring the length in pixels of a string and such but the general idea is there. It supports the ability to colour your text, for example:

$Red Hello, $Green BaneTrapper

Would come out as:

Hello, BaneTrapper

It also support word-wrapping when a message becomes too long.

I hope it will help you somewhere on your way.

I think this would add some interesting dynamic to the game. Although as you say it increases the complexity of the game tremendously. The head, torso and legs separation seems like a good balance point though. But it really depends on the game design, breaking your legs is game over in a platformer if you don't have some interesting mechanics when that happens.

Maybe the player would need to defend him/herself from enemies while not being able to move when having broken legs for a while, and having the leg health automaticly regenerate.

You could also get different disadvantages depending on where you're hurt. Lets say there's three damage stages:

Normal - Everything functions as intended.

Hurt - There are some disadvantages. If your head is hurt maybe you have decreased vision, are confused etc.

"Dead" - Torso and head damage here would be fatal but damage to the legs may result in the scenario I described above.