Colorbox Text Demo
Text Links Grouped - Caption Only
<a class="colorbox-text" href="#inline_content_1" rel="group-1">1 HTML</a>
Inline Content 1 HTML as cbox popup.
Text/Image Links Grouped - Image within Caption
<a class="colorbox-text" href="#inline_content_2" rel="group-1">2 HTML</a>
Inline Content 2 HTML as another cbox popup.
Text Links Grouped - Image Only
<a class="cboxElement" href="/sites/default/files/redwood-forest.jpg" rel="group-1">Redwood Forest</a>
For rendering an image, an a tag with class cboxElement needs to be setup, here is a text link example: Redwood Forest