CODE:
<script type="text/javascript">
// <![CDATA[
var fo = new SWFObject("/player2.swf?video_id=8cjhtZGD8xk&l=86&t=OEgsToPDskKQ8eODFnNexZjUDU65cnua&s=6C3F4519CD457FDA:8A51374783A7BCE6", "movie_player", "450", "370", 7, "#FFFFFF");
fo.write("playerDiv");
// ]]>
</script>

CODE:
str_replace (検索文字, 置換後の文字列, 元の文字列)

CODE:

set mojiretsu to "テストの文字列"

display dialog str_replace("文字列","置き換え後の文字列",mojiretsu)

--文字列置換用ハンドラ
on str_replace(searchTxt, replaceTxt, sourceTXT)
set DefDeli to AppleScript's text item delimiters
set AppleScript's text item delimiters to searchTxt
set sourceTXT to every text item of sourceTXT
set AppleScript's text item delimiters to replaceTxt
set sourceTXT to sourceTXT as string
set AppleScript's text item delimiters to DefDeli
return sourceTXT
end str_replace