asp防止網頁刷新代碼

Sub PreventRefresh()
    Dim RefreshTime,isRefresh
    RefreshTime = 10   ’防止刷新時間,單位（秒）
    isRefresh = 1    ’是否使用防刷新功能，0=否，1=是
    If isRefresh = 1 Then
        If (Not IsEmpty(Session("RefreshTime"))) And RefreshTime > 0 Then
            If DateDiff("s", Session("RefreshTime"), Now()) < RefreshTime Then
                Response.Write "<META http-equiv=Content-Type content=text/html; 
chaRset=gb2312><meta HTTP-EQUIV=REFRESH CONTENT="&RefreshTime&"><br>
本頁面起用了防刷新機制，請不要在"&RefreshTime&"秒內連續刷新本頁面
<BR>正在打開頁面，請稍后&hellip;…"
                Response.End
            Else
                Session("RefreshTime") = Now()
            End If
        Else
            Session("RefreshTime") = Now()
        End If
    End If
End Sub