图形验证码 验证不通过

前两天在网页（asp+sql）中加入了图形验证码  但加入后老是提示账号和密码错误  如何解决下面是我的验证页的代码  各位大哥给看下那错了 
<%dim loginname,loginpass,logincode,GetCode,selected,days

if request("loginname")="" then%><script language=javascript>history.back()alert("名字为空！")</script><%Response.Endelseloginname=trim(request("loginname"))end ifif request("loginpass")="" then%><script language=javascript>history.back()alert("请输入您的密码！")</script><%Response.Endelseloginname=trim(request("loginname"))end ifif request("logincode")<>session("GetCode") then%><script language=javascript>history.back()alert("验证码错误！")</script><%Response.Endelselogincode=trim(session("getcode")) ' 别人教我如何验证图形验证码错误 但给教我怎样验证是正确的所以就把<>改成了=  不晓得这样改可不可以 end ifselected=request("selected")
if selected="yes" then     days=30else    days=1end ifOpenDataBasedim aid,alevel,ACount,adminset rs=server.createobject("adodb.recordset")sql="select * from AuthorList where Aname='"&loginname&"' and Apass='"&loginpass&"' and ISlock=0"rs.open sql,conn,1,3if rs.bof and rs.eof then%><script language=javascript>history.back()alert("用户名或密码错误")</script><%Response.Endelsers("Logins")=rs("Logins")+1rs("LastLoginTime")=rs("Logintime")if datediff("d",rs("Logintime"),date)>0 thenrs("ACount")=rs("ACount")+2rs("Poll")=3end ifif rs("ALevel")<9995 thenrs("ALevel")=int(rs("Apost")/50)+int(rs("Acount")/100)+1end ifif rs("ALevel")=10000 thenadmin="yes"end ifrs("SMS")=int(rs("Apost")/200)+int(rs("Acount")/1000)+5rs("LoginTime")=Now()Aid=rs("Aid")Alevel=rs("Alevel")ACount=rs("ACount")rs.updatedim cookies_pathcookies_path="/"Response.Cookies("Sarah").Expires=Date+daysResponse.Cookies("Sarah")("AName") =loginnameResponse.Cookies("Sarah")("AID") = AIDResponse.Cookies("Sarah")("APass") = loginpassResponse.Cookies("Sarah")("Alevel") = AlevelResponse.Cookies("Sarah")("ACount") = ACountResponse.Cookies("Sarah")("Admin") = AdminResponse.Cookies("Sarah").path=cookies_pathend ifCloseDataBaseresponse.redirect("index.asp")%>

农场经常出问题的。。你去农场的Q吧看看。。好多问题的。。大多都不是自己的问题。。是QQ农场系统有问题。。所以别着急。。或是去Q吧问问。看看有没有跟你一样的朋友。。看看他们是怎么解决的。