Weird thing ... an image inside a Sidebox vanished!

[icecold]

It's weird because it was working fine before, it's a just a .gif, and the sidebox was created from the blank sidebox contribution so it's 100% compatible, but what's even more interesting is that if you look at the source code the image tag is present as before, so what can be preventing it from being displayed, I don't know ...

You can check it out here:
http://www.theoutletseason.com/electronics

It's the SideBox entitled 'International Shipping'

The image's src is there >>>

<!--// bof: myus //--><!--sphider_noindex-->
<div class="rightBoxContainer" id="myus">
<h3 class="rightBoxHeading" id="myusHeading">International Shipping</h3>
<div id="myusContent" class="sideBoxContent"> <p> <a href="http://myus2.myus.com/programs/main/default.aspx?myuskd=Outlet%20Season%20Online%20Store&amp;id=1001267" target="_blank"><img class=" fqufneqnucuehvilkvye" alt="Have Your Very Own U.S. Mailing Address" src="http://myus2.myus.com/Shared/Images/MyUS_International_Shipping_125x125.gif" border="0" height="125" width="125"></a></p></div></div><!--/sphider_noindex-->
<!--// eof: myus //--> 

[icecold]

Solved!
Apparently the problem is a Firefox plug in called AdBlock, I accidentally BLocked the image, for that sidebox!