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    function tdclick(){
        if(event.srcElement.tagName.toLowerCase()=='td')
             alert("ÐУº"+(event.srcElement.parentNode.rowIndex+1)+"ÁУº"+(event.srcElement.cellIndex+1));
     }
  </script>
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firefox Ï嵀 event.target = IE Ï嵀 event.srcElement
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* obj ÐèÒª±éÀúµÄ¶ÔÏó
* author: Jet Mah
* website: http://www.javatang.com/archives/2006/09/13/442864.html 
*/ 
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