background animation - floating blood cells

Red cells float inside a blood vessel. Great background clip with smooth movement, giving a kind of 3d feeling. Suitable for medical atmosphere for the human body, or whatever you like. * File weight is only 1kb !! * Very easy to implement - each and every AS is perfectly explained. * Easily Drag & Drop with built-in mask.(You can place it wherever you want on the stage). * You can easily change colors and parameters. You can set these following features: * Specify the width and height of effect area. * Specify the scale size of the Cell. * Determine the quantity of Cells. * Determine the Horizontal speed. * Determine the Vertical speed. * Select floating direction: Up / Down / Right / Left. The gradient background image can be easily changed.