动态滚动条（适合于外部文本的动态载入寂寞火山开发） 缓动滚动条（适合于文本和图片等最好置于SWF内部） 上下滚动（适合于杂志等没有滚动条的情况，文本最好置于SWF内部，王汝义开发）-Dynamic scroll bar (for dynamic loading of external text lonely volcanic development) slow moving scroll bar (for text and pictures for the best placed within

能实现简单的加减乘除运算，这是我用了很短时间赶出来的，所以功能不是很完善。望原谅-Simple addition and subtraction to multiplication and division, this is a very short time I drive out, so the feature is not perfect. Wang forgive