onchange select box
<p>lets say we have 2 different select boxes with the same number of options:</p>

<pre><code>&lt;select id="box1"&gt;
&lt;option value="1" &gt;1&lt;/option&gt;
&lt;option value="2" &gt;2&lt;/option&gt;
&lt;/select&gt;

&lt;select id="box2"&gt;
&lt;option value="3" &gt;3&lt;/option&gt;
&lt;option value="4" &gt;4&lt;/option&gt;
&lt;/select&gt;
</code></pre>

<p>Is it possible when we select the first box to select the same option number in the second box automatically? Without jquery if possible.</p>

<p>thanks</p>

<p>UPDATE: the values of 2 boxes are different! When we select the first value of box1 the box 2's value will automatically would be 3! and so on...</p>
