What's behind an image? Just about anything you there to be including a db. A typical image tag downloads an image to be processed by the browser an image tag that references an active server page can do most anything and output an image to be displayed as the final output to the user. This example will add one to an Access db (to count the number of impressions). The Access db will also add when the impression occurred automatically and redirect will send the user to an image to be displayed in the browser.