(function(window)
{
	function KeyController()
	{
	}
	KeyController.shootKeyDown	= false;
	KeyController.leftKeyDown	= false;
	KeyController.rightKeyDown	= false;
	// Readable keyCodes
	KeyController.KEYCODE_SPACE		= 32;
	KeyController.KEYCODE_LEFT		= 37;
	KeyController.KEYCODE_RIGHT		= 39;
	KeyController.KEYCODE_A			= 65;
	KeyController.KEYCODE_D			= 68;
	KeyController.prototype.enable	= function()
	{
		window.onkeydown	= this.onKeyDown;
		window.onkeyup		= this.onKeyUp;
	}
	KeyController.prototype.disable	= function()
	{
		window.onkeydown	= null;
		window.onkeyup		= null;
		KeyController.shootKeyDown	= false;
		KeyController.leftKeyDown	= false;
		KeyController.rightKeyDown	= false;
	}
	KeyController.prototype.onKeyDown	= function(e)
	{
		var keyCode	= ( e == null ? window.event.keyCode : e.keyCode );
		switch(keyCode)
		{
			case KeyController.KEYCODE_SPACE:
				KeyController.shootKeyDown	= true;
				return false;
				break;
			case KeyController.KEYCODE_A:
			case KeyController.KEYCODE_LEFT:
				KeyController.leftKeyDown	= true;
				return false;
				break;
			case KeyController.KEYCODE_D:
			case KeyController.KEYCODE_RIGHT:
				KeyController.rightKeyDown	= true;
				return false;
				break;
		}
	}
	KeyController.prototype.onKeyUp	= function(e)
	{
		var keyCode	= ( e == null ? window.event.keyCode : e.keyCode );
		switch(keyCode)
		{
			case KeyController.KEYCODE_SPACE:
				KeyController.shootKeyDown	= false;
				break;
			case KeyController.KEYCODE_A:
			case KeyController.KEYCODE_LEFT:
				KeyController.leftKeyDown	= false;
				break;
			case KeyController.KEYCODE_D:
			case KeyController.KEYCODE_RIGHT:
				KeyController.rightKeyDown	= false;
				break;
		}
	}
	window.KeyController = KeyController;
}(window));