Reload iframe content (local HTML) when clicking buttons
<p>I´m loading HTML file into a DIV (iframe) when user click on a button.</p>

<p>My problem is when click another button and need to reload the iframe with another HTML file.</p>

<p>This is my code:</p>

<pre><code>&lt;script type="text/javascript"&gt;
$(function(){
    $('#2015').click(function(){
        if(!$('#iframe').length) {
                $('#content').html('&lt;iframe id="iframe" src="2015.html" width="700" height="450"&gt;&lt;/iframe&gt;');
        }
    });
});
&lt;/script&gt;
</code></pre>

<p>And here is the button code:</p>

<pre><code>&lt;a href ="#" id="2015"&gt;2015&lt;/a&gt;
</code></pre>

<p>How can I remove the iframe content before to load the next HTML into it?</p>