Why am I getting this error?
<pre><code>function changeSize( fontsize ) {

    var body = document.getElementById("body");
        var font = fontsize + "-font";
        body.className = font;

}


&lt;input type="button" onclick="changeSize(small)" value="Small" /&gt; 
</code></pre>

<p>Firefox console keeps saying that small is undefined. What am I doing wrong?</p>
