That is an "absolute/fixed positioned" element... read up on CSS on things you can do...
Put this in your additonal css template:
Code:
.feedback-button {
display: block;
width: 30px;
height: 106px;
position: fixed;
_position: absolute;
right: 0;
top: 50%;
z-index: 98;
margin: -58px 0 0 0;
cursor: pointer;
}
And put this in your footer:
Code:
<span class="feedback-button" style="background: url(http://mydownloader.net/img/en/feedback.gif) 0 0 no-repeat;"></span>
That site uses a custom javascript to pop up a contact forum but you should be able to link it to your contact us page.