Colorbox Jquery gallery, load image link

I've got some troubles in loading content, from a custom image link in colorbox windows

Placing the class colorbox in image link

As you can se in test, colorbox window can't show the linked full size image of my logo

Solution: place colorbox in <div>

The solution I've found is placing colorbox class in the div as this example:

<div>
<p><a class="colorbox" href="/imageaddress/colorbox/fullquality.jpg" title="div title">
        <img alt="alt image" src="/pageimage/minified.jpg"
         title="imagetitle" /></a></p>
</div>

Result: