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1. Êó±êÒÆ¶¯´¥·¢µ÷ÓÃJavaScript:
<td onMouseOver="popmenu(this, <%=rsSub("ID")%>)" onMouseOut="menuout(this)" >test </td>

2. JavaScriptµÄ·½·¨ÈçÏÂ:
function popmenu(HeadMenu, intDownSubID)
{
HeadMenu.className = "over";
SubPopMenu.style.top = getposOffset(HeadMenu, "top")  + HeadMenu.offsetHeight/2 + 8;
SubPopMenu.style.left = getposOffset(HeadMenu, "left") + HeadMenu.offsetWidth/2-42;
try{
var url = "index.asp?DownSubID=" +escape(intDownSubID);
xmlHttp.open("POST",url,true);
xmlHttp.send(null);
}catch(exception){}
SubPopMenu.style.display = "block";
}

3.XMLHttpµÄÒýÓôúÂëºÜ¼òµ¥ÈçÏÂ:
if (!xmlHttp && typeof XMLHttpRequest != "undefined") {
  xmlHttp = new XMLHttpRequest();
}

4.±¾ÉíµÄҳΪΪindex.asp,ΪʲôÓÃ
intSubID = Request("DownSubID") //ÕâÀïÈ¡²»µ½Öµ,Çë´óÏÀÖ¸½Ì.
Response.Write(intSubID)

xmlHttp.open("GET",url,true);
xmlHttp.onreadystatechange  = getData;
xmlHttp.send(null);

function getData()
{
if(xmlHttp.readyState==4 && xmlHttp.status==200) alert(xmlHttp.responseText)
}

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