To add this to your site:
View the source code. This could be done by holding down the mouse and look at the dialogue box that appears or by going to the "view" pulldown menu.
Cut and paste the script anywhere you like. Be careful that whatever part belongs in the head area is put there.
Make any alterations you need to make. Any place it says "Change This" just go right head and do it. All places it says "changethisfirst" must agree with each other.Please notice I didn't leave any spaces