This is a very simple thing to do, which can get you some money the 2 examples below are straight forward. The first being the easiest to do with a simple echo output, the next does a echo output as well as log the amount of times the banner has been shown

Let PHP control what page your on, and change the menu background image to the page your on, in this tutorial it shows you the code that I use on this website. It will add id="selected" to the menu button of the page your on.

The number one turn off for a website has to be loading times. If your server supports mod_expires you can improve your loading times by 66%, as well as saving your self bandwidth.

When I saw the new google interface, I immediately moved my mouse to the more menu, after I clicked that I saw even more! After browsing this page I saw speed up the web. It states that it can speed up any web page loading times, so I though I'd give it a try.