private String[] findOnlineUsernames(String realname, String channel)
	{
		String[] all = findUsernames(realname);
		User[] online = getUsers(channel);
		String[] usernames = new String[16];

		for(String s : all)
		{
			for(User u : online)
			{
				if(u.equals(s))
				{
					usernames[username.length() + 1] = s;
				}
			}
		}
		return usernames;
	}