Well if you have some coding skills, you could do this
switch ( fe.list.name )
{
case "Atari Lynx":
logo = fe.add_image( "atarilynx.png", 10, 22, fe.layout.width / 5, height / 5);
break;
.
.
.
case "Bandai Wonderswan Color": <<<--- try to match you emulator alias
etc,etc,etc
and in that way you could use the same layout but with another behavior for each emulator