The ButtonEventHandler class allows for timeline-based instances * (MovieClips) to receive button events and allows for those events to * bubble up to parent clips. This is contrary to normal button event * behavior (Buttons and MovieClips)

Flash软件，蜻蜓的飞行，有操作按钮类，沿轨迹，源代码文件-Flash software, dragonflies flying, the operation button class, along the trajectory, the source code files

一个自定义的特效button，可以替换点击的换皮效果，加入各种缓动效果-a button class define by myself,it can change event action