How did they develop this website footer?

Question

I understand how to show/hide DIV but how did they make this footer?

I would love this on my website.

Please take a look at this page it's Constant Contact by the way, notice the footer.

Constant Contact Thanks!

Answer 1

Here is a very simplistic version of how to achieve something similar to your example. You only need to use JavaScript if you're using a browser < IE7, otherwise simple CSS can do it.

Live Demo

#footer{
  bottom: 0px;
  position: fixed;
}