Navigate folder instead of asp.net page

Hi,

I have hosted a application in IIS. My site contains,
1. Default.aspx
2.Products\Product.aspx
3.Sales\Sales.aspxx
4.web.config
I am fine with ("http://IPAddress:Port/default.aspx")

Inside default.aspx, I have Anchor tag which is <a href="/Products/product.aspx">Product</a>
the above tag is working perfectly.
But my need here is, href="/products". and it shoud show the product.aspx
Please advice me to achieve this.

Thanks,
itechathi