I am working on my client's website which has pure static htm pages. But the Javascipt that he has used on his site just to show the breadcrumbs has converted the static product pages into the dynamic ones. He has several product pages which has the static urls like the below one www.example.com\products\product_no_1.htm But to show breadcrumbs on the pages he used javascript which has changed the urls of the pages like www.example.com\products\product_no_1.htm?bc_market+pro_ch So my problem is that the same content (product page) can be accessed through several different urls, so its clearly a duplicate content issue in the eyes of the search engines. Specially Google, it’s not indexing the new pages. Adding to this, the same product page needs to be accessed through the different categories on the site. For example: If I make headlights for vehicles. The same product (headlight) can appear on several different categories like under the two-wheeler, three-wheeler and four-wheeler categories. But all I know is that the content location is same for the product pages only breadcrumbs is causing problems. So can anybody suggest how can I show these product pages so that I don’t have to change the urls of the pages & at the same time I can show the breadcrumbs on the pages as well.