private void debug()
	{
		if ( Input.getKey( Input.KEY_F5 ) )
			glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
		else if ( Input.getKey( Input.KEY_F6 ) )
			glPolygonMode( GL_FRONT_AND_BACK, GL_POINT );
		else
			glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
	}