怎样记录一个HTML页面滚动条的位置？

使用微软的默认行为userdata吧，下面的例子你自己改改就可以用<HTML>
<HEAD>
<STYLE>
   .userData {behavior:url(#default#userdata);}
</STYLE>
<SCRIPT>
function fnSaveInput(){
   var oPersist=oPersistForm.oPersistInput;
   oPersist.setAttribute("sPersist",oPersist.value);
   oPersist.save("oXMLBranch");
}
function fnLoadInput(){
   var oPersist=oPersistForm.oPersistInput;
   oPersist.load("oXMLBranch");
   oPersist.value=oPersist.getAttribute("sPersist");
}
</SCRIPT>
</HEAD>
<BODY>
<FORM ID="oPersistForm">
<INPUT CLASS="userData" TYPE="text" ID="oPersistInput">
<INPUT TYPE="button" VALUE="Load" onclick="fnLoadInput()">
<INPUT TYPE="button" VALUE="Save" onclick="fnSaveInput()">
</FORM>
</BODY>
</HTML>