asp如何统计当前网页的在线人数，不要统计本站的，只要统计本页现在的在线人数就行了

<%
Dim RefreshTime, IdleTime, TotalUsers, OnlineUser(), Tmp(), Num, I, ID
RefreshTime = 10 '设置网页自动更新时间为10秒
IdleTime = RefreshTime * 3 '设置闲置时间为自动更新时间的3倍
Application.Lock

'清点所有连线到此网页的浏览器，然后将目前打开的浏览器的SessionID放入数组的最后面
If Application(Session.SessionID & "LastAccessTime") = Empty Then
If Application("TotalUsers") = Empty Then Application("TotalUsers") = 0
ReDim Tmp(Application("TotalUsers") + 1)
Num = 0
If Application("TotalUsers") > 0 Then
For I = LBOUND(Application("OnlineUser")) To UBOUND(Application("OnlineUser"))
ID = Application("OnlineUser")(I)
If ID <> Session.SessionID Then
Tmp(Num) = ID
Num = Num + 1
End If
Next
End If
Tmp(Num) = Session.SessionID
Application("TotalUsers") = Num + 1
ReDim Preserve Tmp(Appl