title: jQuery find dynamic input name
body: <p>I have a simple form with radio buttons</p>
  
  <pre><code>&lt;form&gt;
  &lt;input type="radio" name="radio_1" value="1" /&gt;Radio 1
  &lt;input type="radio" name="radio_1" value="2" /&gt;Radio 2
  &lt;input type="radio" name="radio_1" value="3" /&gt;Radio 3
  &lt;/form&gt;
  </code></pre>
  
  <p>And i have additional div with same radios (without form)</p>
  
  <pre><code>&lt;div class="attributes"&gt;
  &lt;input type="radio" name="radio_1" value="1" /&gt;Radio 1
  &lt;input type="radio" name="radio_1" value="2" /&gt;Radio 2
  &lt;input type="radio" name="radio_1" value="3" /&gt;Radio 3
  &lt;/div&gt;
  </code></pre>
  
  <p>I want to make radios with same name and value in FORM to be checked when i check radios in DIV</p>
  
  <p>How can i make it?</p>