It's a character entity in css format ref http://htmlarrows.com/, the css for it in the content declaration here....
.p7STT-anchor i:before {
content: "\2191";
padding-right: 4px;
}
You can always use an image instead if you wanted....
.p7STT-anchor i:before {
content: url(image.jpg);
padding-right: 4px;
}
Or comment out the rule above and simply put an image in the code, find this...
<a id="p7STTa_1" class="p7STT-anchor" href="#">< i >
Change it to....
<a id="p7STTa_1" class="p7STT-anchor" href="#">image in here< i >
There might be some tidying up to do in the css
Note, in the code above there are no spaces in < i > - I had to put them in as the forum was treating them as markup :-)
HTH