ASP页面随机添加字符实现防复制的代码

<%
        '作用:文字防复制乱码 函数
        'Date:2006-3-6
        '作者:blue2004
        '参数str 为原文,str1作者也是你自己,reslut产生乱码的种子
        Function ReadToCode(str,Str1,result)
                dim name
                dim i,j,k
                If isnull(str) then
                        ReadToCode=""
                        Exit Function
                End If
                Randomize 
                k=instr(str,"</P>")
                Do while k>0
                        result=""
                        for i=0 to 19
                                j=Int(128 * Rnd)+1
                                if j=60 or j=62 then
                                        j=j+1
                                end if
                                result =result&chr(j) ' 产生随机数。
                        next 
                        result="<span style='DISPLAY: none'>"&result&"</span>"
                        str=replace(str,"</p>",result&"<'/p>",1,1)
                        k=instr(str,"</p>")
                loop
                str=replace(str,"<'/p>","</p>")

                k=instr(str,"<br>")
                Do while k>0
                        result=""
                        for i=0 to 19
                                j=Int(128 * Rnd)+1
                                if j=60 or j=62 then
                                        j=j+1
                                end if
                                result =result&chr(j) ' 产生随机数。
                        next 
                        result="<span style='DISPLAY: none'>"&result&"</span>"
                        str=replace(str,"<br>",result&"<'br>",1,1)
                        k=instr(str,"<br>")
                loop
                str=replace(str,"<'br>","<br>")
                ReadToCode=str&"<div align=right style='color=gray'>[版权归原作者及"&Str1&"共同拥有，转载请注明出处]</div>"
        End Function


Dim a 
a="嘎嘎，一篇<br>不错的好<p>文章哦</P><br><P>我艹，，让你偷。。木　JJ的家伙,嬲。。</p>"


'Only For Test
response.write (a)

Dim b
'为配合转换,字符串ａ的大小都替换成小写
b=ReadToCode(LCase(a),"blue2004","www.xxx.com")

'Output
response.write b
%>
</div>