Clickable image on the side of the screen

How do you put an image on the side of the screen like in this screenshot below? The red button is a clickable link and moves with the page so it is always visible. I want to have the image show on every page of the forum on the right side of the screen like this screenshot, and the image needs to be able to be a clickable link. I'm assuming this will take javascript. Thanks

Hello,

it is a code provided by a website... There are lots of sites that does that!
Here you are an example:

http://idratherbewriting.com/2007/12/07/adding-a-send-feedback-link-to-your-online-help-robohelp-project/

Friendly,

Ok thanks but I figured it out last night. I used a ul class and css.

thanks