string returnURL
returnURL="XX.asp?id="&request("id")&"&class="&request("class")&"&shu="&request("shu")&""
response.write "<script language='javascript'>"
response.write "alert('请输入正确的验证码');"
response.write "location.href = '" + returnURL + "'"
response.write "</script>"
response.end
