modifica righe e colonne

assegnando valori come numero righe o %

<FRAMESET border=0
frameSpacing=0 rows=173,* frameBorder=yes cols=*>

<FRAME id=sopra name=sopra
src="testata.htm" scrolling=no>

<FRAMESET border=5
frameSpacing=10 rows=* frameBorder=yes cols=200,*>

<FRAME id=sinistra name=sinistra
borderColor=#ffffff src="principale.htm"
frameBorder=yes
>

<FRAME id=centro name=centro
borderColor=#ffffff src="home.htm"
frameBorder=yes
>

</FRAMESET></FRAMESET></HTML>

attiva1

<FRAMESET border=0
frameSpacing=0 rows=50%,* frameBorder=yes cols=*>

<FRAME id=sopra name=sopra
src="testata.htm" scrolling=no>

<FRAMESET border=5
frameSpacing=10 rows=* frameBorder=yes cols=30%,*>

<FRAME id=sinistra name=sinistra
borderColor=#ffffff src="principale.htm"
frameBorder=yes
>

<FRAME id=centro name=centro
borderColor=#ffffff src="home.htm"
frameBorder=yes
>

</FRAMESET></FRAMESET></HTML>

attiva2

<FRAMESET border=0
frameSpacing=0 rows=30%,* frameBorder=yes cols=*>

<FRAME id=sopra name=sopra
src="testata.htm" scrolling=no>

<FRAMESET border=5
frameSpacing=10 rows=* frameBorder=yes cols=50%,*>

<FRAME id=sinistra name=sinistra
borderColor=#ffffff src="principale.htm"
frameBorder=yes
>


<FRAME id=centro name=centro
borderColor=#ffffff src="home.htm"
frameBorder=yes
>

</FRAMESET></FRAMESET></HTML>

attiva3