function fv(){ 
   xDisplay('capaexpansion','block');
   xDisplay('capaexpansion2','none');  
   xDisplay('capaexpansion3','block');
   xDisplay('capaexpansion4','none'); 
   xDisplay('capaexpansion5','block'); 
   xDisplay('capaexpansion6','none'); 
}
function hs(){ 
   xDisplay('capaexpansion','none');
   xDisplay('capaexpansion2','block');  
   xDisplay('capaexpansion3','none');
   xDisplay('capaexpansion4','block'); 
   xDisplay('capaexpansion5','none'); 
   xDisplay('capaexpansion6','block'); 
}