function contentstr(content,direction)
    dim strbig,tstrbig,strsma,tstrsma
    strbig="ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ＇"
    tstrbig="ABCDEFGHIJKLMNOPQRSTUVWXYZ'"
    strsma="ａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚ"
    tstrsma="abcdefghijklmnopqrstuvwxyz"
    dim b(26),tb(26),s(25),ts(25)
    for i=1 to 26
        b(i-1)=mid(strbig,i,1)
        tb(i-1)=mid(tstrbig,i,1)
    if direction="1" then
        content=replace(content,b(i-1),tb(i-1))
    elseif direction="-1" then
        content=replace(content,tb(i-1),b(i-1))
    end if
        s(i-1)=mid(strsma,i,1)
        ts(i-1)=mid(tstrsma,i,1)
    if direction="1" then
        content=replace(content,s(i-1),ts(i-1))
    elseif direction="-1" then
        content=replace(content,ts(i-1),s(i-1))
    end if
    next
'-------------------------------------------
content=replace(content,chr(13)&chr(10),"<br>")
    if direction="1" then
        content=replace(content,"　"," ")
    else
        content=replace(content," ","　")
    end if
'-------------------------------------------
    contentstr=content
    if direction="1" then
        response.write "大写转小写：<br>"
    else
        response.write "小写转大写：<br>"
    end if
    response.write contentstr & "<BR>"
end function
%>

<form action='d.asp' method="post">
大写转小写：
  <textarea name="contentA" rows="8" cols="30">
Ａ ｌａｄｙ ｓａｉｄ ｔｏ ｈｅｒ ｆｒｉｅｎｄ ｔｈａｔ ｔｈｅ ｓｕｎ ｉｓ ｔｈｅ ｍｏｓｔ ｂｅａｕｔｉｆｕｌ ａｎｄ ｕｓｅｆｕｌ ｂｏｄｙ。
Ａ ｇｅｎｔｌｍａｎ ａｎｓｗｅｒｅｄ：“Ｙｅｓ，Ｍａｄａｍ，ｔｈｅ ｓｕｎ ｉｓ ａ ｖｅｒｙ ｆｉｎｅ ｂｏｄｙ，ｂｕｔ ｉｎ ｍｙ ｏｐｉｎｉｏｎ，ｉｔ ｉｓ ｎｏｔ ｓｏ ｕｓｅｆｕｌ ａｓ ｔｈｅ ｍｏｏｍ.”
“Ｗｈｙ？”ａｓｋｅｄ ｔｈｅ ｌａｄｙ.
“Ｂｅｃａｕｓｅ，”ｒｅｐｌｉｅｄ ｔｈｅ ｇｅｎｔｌｅｍａｎ，“ｔｈｅ ｍｏｏｎ ａｆｆｏｒｄｓ ｕｓ ｌｉｇｈｔ ｉｎ ｔｈｅ ｍｉｇｈｔ－ｔｉｍｅ，ｗｈｅｎ ｗｅ ｒｅａｌｌｙ ｗａｎｔ ｉｔ，ｗｈｅｒｅａｓ ｗｅ ｈａｖｅ ｔｈｅ ｓｕｎ ａｌｗａｙｓ ｗｉｔｈ ｕｓ ｉｎ ｔｈｅ ｄａｙ－ｔｉｍｅ，ｗｈｅｎ ｗｅ ｈａｖｅ ｎｏｔ ｓｏ ｍｕｃｈ ｍｅｅｄ ｏｆ ｉｔ.”</textarea>
  <br>
  小写转大写：
  <textarea name="contentB" rows="8" cols="30">
Arctic Explorer Boy：Dad，when I grow up I want to be an Arctic Explorer．
Father：That＇s fine，Bill．
Boy：But I want to go into training at once．
Father：And so﹖
Boy：Well，I want a dollar a day for ice－cream so I＇ll get used to the cold．
</textarea>
  <br>
  <input type="submit" name="Submit" value="Submit">
</form>
</body>
</html>