If the user clicks on the arrow that points up, it should link to a page that says "Up!". Clicking on the down, left and right arrows should link you to appropriate pages.
For example, if you click on the right arrow, the page you link to should look like this:
Put the working example on your Web page, and turn in a listing of the page source and a screen print of it on the server. (Download the image with four arrows from this page).