[resolved] Change value of radio button by clicking on select?

[solitario]

Hello all.
How would I select a specific radio button in an array by selecting an option within a select?

<input type="radio" name="avatar" value="gallery_avatar">
<input type="radio" name="avatar" value="upload_avatar">

<select name="gallery">
<option value="Bender.jpg">Bender</option>
<option value="Homer.jpg">Homer</option>
</select>

<!--
What I mean is when a user selects one of the options above, I would like to check the first radio button.
-->

Any help is appreciated.