for (var i = 0; i < enemies.length; i++)
        	   {
        	      var b = enemies[i];
        	      if (b.x < 0 || b.x > 304)
        	      {
        	         enemies.splice(i, 1);
        	         game.rootScene.removeChild(b);
        	      }
        	      else if (b.y < 0 || b.y > 304)
        	      {
        	         enemies.splice(i, 1);
        	         game.rootScene.removeChild(b);
        	      }
        	   }