This template uses Typicons web font, provided by Fontello font bundling service. It allows you to quickly add nice icons into your pages by using css tags.
To add an icon somewhere in the template simply do:
<i class="icon-home"></i>This will insert a home icon, just as the one seen in the sidebar. The available class names you can use are as follows:
These should work in all the browsers, all the way down to and including IE7, but not IE6.