PopUp and Layer Ads add-on allow you to display advertisements and even any content in layers and pop-up windows. Pop-up ads and hierarchical ads provide you with new placement types in the ﾓAdvanced Adsﾔ dashboard. You can choose a different location for the pop-up window. You can set parameters based on time or interaction: for example, you can fade out the ad after a certain amount of time, or display a pop-up window after a certain amount of scrolling.