how can I change path to img src from java script? : <p>I have an image in my div:</p>

<pre><code>&lt;div class="pressphone"&gt;
    &lt;img class="phone" src="../img/template/iphone3.png"&gt;
&lt;/div&gt;
</code></pre>

<p>how can I switch the photo to <code>../img/template/iphone4.png</code> from javascript/jquery?</p>
