How to automatically uncheck a checkbox if another checkbox is checked through javascript?
<p>I have a checkbox Birthdate which shows the mm/dd only.And below it there is another checkbox called ShowYear which shows the year and this checkbox is only visible if the Bithdate checkbox is checked.</p>

<p>Now I want to uncheck the ShowYear checkbox automatically if the Birthdate checkbox is 
unchecked through javascript. </p>
