Javascript 事件捕获(setCapture,captureEvents)

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object.setCapture() 当一个object的被 setCapture 后，他的方法将会被继承到整个文档进行捕获。
   当不需要把方法继承到整个文档捕获时，要用 object.releaseCapture()

   Mozilla 也有类似的功能，方法稍微不同
   window.captureEvents(Event.eventType)
   window.releaseEvents(Event.eventType)

Event 是Mozilla特殊的一个object.
eventType 包括: Abort, Blur, Click, Change, DblClick, DragDrop, Error, Focus, KeyDown, KeyPress, KeyUp, Load, MouseDown, MouseMove, MouseOut, MouseOver, MouseUp, Move, Reset, Resize, Select, Submit, Unload.
相关联接:
For IE
http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/methods/setcapture.asp
http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/methods/releasecapture.asp

For Mozilla
http://developer.mozilla.org/en/docs/DOM:window.captureEvents
http://developer.mozilla.org/en/docs/DOM:window.releaseEvents

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