非主流女生可爱图片:关于ASP后台安全

系统安全文件在上传发布时:被警告有非法字符,有谁懂得帮我解释一下.谢谢,原文件如下:
<%
Response.buffer=true
NumCode
Function NumCode()
Response.Expires = -1
Response.AddHeader "Pragma","no-cache"
Response.AddHeader "cache-ctrol","no-cache"
dim rndnum,i,j
dim Ados,Ados1
Randomize
Do While Len(rndnum)<4
num1=CStr(Chr((57-48)*rnd+48))
rndnum=rndnum&num1
loop
session("adminid")=rndnum
dim zimg(4),NStr
NStr=cstr(rndnum)
For i=0 to 3
zimg(i)=cint(mid(NStr,i+1,1))
Next
dim Pos
set Ados=Server.CreateObject("Adodb.Stream")
Ados.Mode=3
Ados.Type=1
Ados.Open
set Ados1=Server.CreateObject("Adodb.Stream")
Ados1.Mode=3
Ados1.Type=1
Ados1.Open
Ados.LoadFromFile(Server.mappath("body.Fix"))
Ados1.write Ados.read(1280)
for i=0 to 3
Ados.Position=(9-zimg(i))*320
Ados1.Position=i*320
Ados1.write ados.read(320)
next
Ados.LoadFromFile(Server.mappath("head.fix"))
Pos=lenb(Ados.read())
Ados.Position=Pos
for i=0 to 9 step 1
for j=0 to 3
Ados1.Position=i*32+j*320
Ados.Position=Pos+30*j+i*120
Ados.write ados1.read(30)
next
next
Response.ContentType = ""
Ados.Position=0
Response.BinaryWrite Ados.read()
Ados.Close:set Ados=nothing
Ados1.Close:set Ados1=nothing
End Function
%>