IE only.

</p> <p><script></p> <p>function OuterClick() {</p> <p> if(event.expando == "from_inner")</p> <p> {</p> <p> alert("Event actually fired by clicking on inner DIV!")</p> <p> }</p> <p> else</p> <p> {</p> <p> alert("Event fired by clicking on outer DIV!")</p> <p> }</p> <p>}</p> <p>function InnerClick() {</p> <p> var eventObj = document.createEventObject();</p> <p> // Set an expando property on the event object. This will be used by the </p> <p> // event handler to determine what element was clicked on.</p> <p> eventObj.expando = "from_inner";</p> <p> Outer.fireEvent("onclick",eventObj);</p> <p> event.cancelBubble = true;</p> <p>}</p> <p></script></p> <div id="Outer" onclick="OuterClick()" style="height:200;width:200;padding:50;background-color:mistyrose"> <div id="Inner" onclick="InnerClick()" style="height:100;width:100;padding:25;background-color:lavender"></div> </div> <p> [Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]

中文参考：

http://download.cnblogs.com/birdshome/archive/2005/06/06/168890.html