How can I get this sticky footer working?

I've applied the CSS sticky footer tutorial that I got from here on my website, but for some reason I can't get it to work?

Thanks in advance.

Solution

Remove the top margin from #body and replace it with padding:

#body {
    width: 1200px;
    margin: 0 auto;
    overflow:auto;
    padding-top: 80px;
    padding-bottom: 170px;
}

add 100% height to html (not only body):

html, body {
  background-color: #FFF;
  margin: 0;
  padding: 0;
  height: 100%;
}