How can i add banner above each product info page? Or how can i disable the function that if i only have one product, it will go directly into the product page, to instead i would like to go to the product list first even i only got one product so i can display the banner on the top of the product

Click image for larger version.  Name: 1.jpg  Views: 46  Size: 29.5 KB  ID: 10487