那就在shoppingcart.asp里把判断的去掉了

IF RS("TotalNum") < Amount Then
 Amount = 1
 Session("Amount"&RS("ID")) = 1
 response.write "<script language=javascript>alert('对不起，"&RS("Title")&"暂时库存不足，请过段时间再来购买该商品！');history.back(-1);</script>"
 response.End()
End IF