Gemt istedet for disabled ???

Kan man helt gemme (evt. hidden) disse felter fra formen i stedet for de kun er disabled. Hvis ja hvordan så ??? :

<input type=radio name=Rad value=1 onclick="ankdato.disabled = true; ankmoned.disabled = true; ank2dato.disabled = false; ank2moned.disabled = false;">
<input type=radio name=Rad value=2 onclick="ankdato.disabled = false; ankmoned.disabled = false; ank2dato.disabled = true; ank2moned.disabled = true;">
<br><br>
<select id=ankdato name=ankdato disabled>
  <option value=1>1</option>
  <option value=2>2</option>
</select>
<select id=ankmoned name=ankmoned disabled>
  <option value=1>1</option>
  <option value=2>2</option>
</select>
<br><br>
<select id=ank2dato name=ank2dato disabled>
  <option value=1>1</option>
  <option value=2>2</option>
</select>
<select id=ank2moned name=ank2moned disabled>
  <option value=1>1</option>
  <option value=2>2</option>
</select>