Hi All,
Maybe I did not understand what is happening well before. Now I know what it is.
When I save the text to database, it saves the correct one (<a href=join.asp></a>). And if I view source of the current webpage, I can see the correct one (<a href=join.asp></a>) in the codes.
So when it displays in CuteEditor like (<a href=http://localhost/...>), it is only a display problem caused by IE and I just ignore it.
Thanks.