@EventHandler
	public void onSignClick(PlayerInteractEvent event)
	{
		Player player = event.getPlayer();
		if(!player.hasPermission("woolrush.sign"))
			return;
		Block block = event.getClickedBlock();
		if(block==null)
			return;
		if((block.getType().equals(Material.WALL_SIGN)) || (block.getType().equals(Material.SIGN_POST)))
		{
			Sign sign = (Sign) block.getState();
			if(sign.getLine(0).equalsIgnoreCase("[Wool Rush]"))
			{
				String arena = sign.getLine(1);
				for(Arena a : plugin.arenas)
				{
					if(a.getName().equalsIgnoreCase(arena))
					{
						a.addPlayer(player);
						plugin.players.put(player.getName(), a.getName());
						player.sendMessage(ChatColor.LIGHT_PURPLE+"You've joined arena: " + ChatColor.BLUE+ a.getName());
						return;
					}
					player.sendMessage(ChatColor.RED+"Sorry, this arena is not open!");
				}
			}
		}
	}