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。