A neat little tool you may see some websites using now-a-days is a menu, toolbar or possible a footer that always seems to stay with the page no matter how aggressively you scroll up and down. Although it looks like a unique, possible complicated display of CSS mastery, all it really is, is a single line of code.

position:fixed;

By using this tibit of CSS, you can force a div or practically anything else to have a fixed position of the users screen. Combining this with top, bottom, left or right positioning will place the item in a specific location on the screen and will keep it there as long as you please.