asp 初级代码问题，继续请高手解答

asp8.asp 代码如下：
<%
dim user
dim flag
dim pwd
dis say
response.buffer=true
response.contentype="text/html"
response.charset="gb2312"
user=request.form("username")
pwd=request.form("password")
say=request.querystring("say")
%>
<form method="post" action="asp8b.asp">
<p>username: <input type="text" name="username" size="12"><br>
password: <input type="password" name="password" size="12"><br>
<input type="submit" value="submit" name="b1"><input type="reset" value="cancel" name="b2"></p></form>
<%
if say=1 then
response.write "welcome shu-sheng!"
end if
if say>1 then
response.write "re-welcome shusheng!"

<%
dim user
dim flag
dim pwd
dim say

user=request.form("username")
pwd=request.form("password")
say=request.querystring("say")
%>
<form method="post" action="asp8b.asp">
<p>username: <input type="text" name="username" size="12"><br>
password: <input type="password" name="password" size="12"><br>
<input type="submit" value="submit" name="b1"><input type="reset" value="cancel"

name="b2"></p></form>
<%
if say=1 then
response.write "welcome shu-sheng!"
end if
if say>1 then
response.write "re-welcome shusheng!"
end if
if user="adm" and pwd="shusheng" then
response.expir

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