function Comprobar(){ 
if (document.form.checkbox.checked){ 
   xDisplay('capaexpansion', 'block');
   xDisplay('capaexpansionb', 'block');
   xDisplay('capaexpansionc', 'block');

}else{ 
xDisplay('capaexpansion', 'none');
     xDisplay('capaexpansionb', 'none');
     xDisplay('capaexpansionc', 'none');
xDisplay('capaexpansiond', 'block');
xDisplay('capaexpansione', 'none');
xDisplay('capaexpansionf', 'none');
 }
}
function Comprobar2(){ 
if (document.form.radio1.checked){ 
   xDisplay('capaexpansion', 'block');
   xDisplay('capaexpansionc', 'block');
   xDisplay('capaexpansiond', 'none');
   xDisplay('capaexpansione', 'block');
   xDisplay('capaexpansionf', 'none');
}else{ 
     xDisplay('capaexpansion', 'block');
     xDisplay('capaexpansionc', 'block');
     xDisplay('capaexpansiond', 'none');
     xDisplay('capaexpansione', 'none');
     xDisplay('capaexpansionf', 'block');
 }
}