试试
<OBJECT
   id=MyControl
   type="application/x-oleobject"
   classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11"
   codebase="HHCTRL.ocx#Version=4,72,8252,0"
   width=0
   height=0
>
   <PARAM name="Command" value="ALink">
   <PARAM name="Button" value="Text:See Also">
   <PARAM name="Item1" value="c:\Help\MyFile.chm">
   <PARAM name="Item2" value="overview">
   <PARAM name="Item3" value="bibliography">
</OBJECT><a href="#" onclick="MyControl.ALick();">CHM文件</a>