Attached are a few images that can help you locate the HTML script for the website banners.
Once you are logged into Panda, please click on the 'Preferences' tab on the bottom left.
Then, at the bottom of this screen, you will find the 'Banners' listing.
Once you click into 'Banners' you will see the HTML code on the right side of the screen.
From there, the HTML that you prefer can be selected.