i was trying to customize FOP interface. for the first step i tried to decrease but height, in
/var/www/html/panel/op_style.cfg
i changed btn_height=26 to btn_height=20, but these change mess the fop layout completely. i even in
/var/www/html/admin/modules/fw_fop/bin/retrieve_op_conf_from_mysql.pl
change
$buttonsizey = 28; # 1+26+1 from information in op_style.cfg

but it didnt work out.
also for decreasing parking lot & conf area, in
/var/www/html/panel/op_buttons_additional.cfg
i changed

; Parking lots
[rectangle]
x=492
y=256
width=490
height=110

but again it result is a mess.
does anyone have experience in these?