Pre-Requirements knowledge:productList tqtag.
Description: Check if a product is a best seller.
This tqoption is used inside the productList tqtag.
<tqoption type="bestSeller" alternative0="Not best seller" >!{
Best Seller
!}0</tqoption>
Another example - using the bestSeller tqoption to display one image if the product is a best seller or another image if the product is not a best seller.
<tqoption type="bestSeller" alternative0="bestSeller-off.gif" ><img src="images/{!bestSeller-on.gif!}0" alt="img" /></tqoption>