This page gives you the code to place a "top of page" link in the bottom right corner of the screen. There is a sample of this in the bottom right corner of this screen. When you scroll down, the "top of page" link stays in the corner. The link will flash between gray and black 10 times, and then it will stop. When it stops flashing, it will change to red when hovered over.
Paste this code below your opening <body> tag:
Paste this code into your stylesheet: