Problem with Logo only in IE

Hi all,

hope you understand my english :azn:

I got a new ssl certificate an it works fine. Then i installed a box called Sicherheit in our shop and placed there the source code i became from here.
FF, Opera,Safari show this like i want :
The Logo in the box and the secure text if you go mouseover.

IE does this not. There is the logo on the screenside outside the box and there is on the text “premium ssl certificate”

could someone help me what´s going wrong here and how i could fix it?
the link to our site ist here:
thank you very much