title: How can I set an individual checkbox in a checkbox group to "checked" based on it's value attr?
body: <pre><code> &lt;div id="notifydaydiv" name="notifydaydiv" style="display:none; padding-left:50px"&gt;
   &lt;input name="notifyday" type="checkbox" value="wed" /&gt; Wednesday &lt;br /&gt;
   &lt;input name="notifyday" type="checkbox" value="thu" /&gt; Thursday &lt;br /&gt;
   &lt;span style="color:red; font-size:7pt;"&gt;Recommended&lt;/span&gt;&lt;br /&gt;
   &lt;input name="notifyday" type="checkbox" value="fri" checked="checked"/&gt; Friday 
   &lt;div id="day_err"&gt;&lt;/div&gt;
   &lt;script&gt;
    [ set which checkbox is checked based on the value attr ]
   &lt;/script&gt;
  &lt;/div&gt;
  </code></pre>