checkbox勾选后禁用其他html组建

<input type='checkbox' name='checkbox1' value='7' onclick="account.disabled=!this.checked"><input name='account' value='' size='6' disabled=true>

?或则

<input type='checkbox' name='checkbox1' value='7' onclick="account.disabled=!this.checked;if (!this.checked) account.value=''"><input name='account' value='' size='6' disabled=true>

?

?