var socket;

function connectToChatServer( server, port, userId, messageCallback)
{
	socket = io.connect(server + "?userId=" + escape( userId), {port: port});
	socket.on('connect', function () {
		//console.log("connected");
	});
	socket.on('im', messageCallback);
	socket.on('ping', function (msg) {
		socket.emit('ping', msg);
	});
	socket.on('disconnect', function () {
		//console.log('disconnected');
	});
	socket.on('error', function ( reason) {
		//console.error("Unabled to connect to chat server", reason);
	});
	socket.on('connect_failed', function ( reason) {
		//console.error("Unabled to connect to chat server", reason);
	});
}

function sendChatMessage( userId, message)
{
	if (socket) socket.emit('im', { userId:userId, message:message});
}