No Borders Between Frames
By default frames have visible borders between them. Sometimes, however, you want the frames to join directly to each other with no border between them. MSIE and Netscape recognize different attributes in
<FRAMESET ...> for this purpose, but they are mutually compatible, so you can use all of them at once.
To create a borderless frameset, use a
<FRAMESET ...> tag with
BORDER attributes like this:
<FRAMESET ROWS="20%,*" FRAMEBORDER=NO FRAMESPACING=0 BORDER=0>