daveVk - 1:05 am on Aug 2, 2012 (gmt 0)
The issue is knowing what price goes with what image, adding the id is the most direct way, if that can be done.
Using this ( the link element ) inside the  will not work as a string such as 'firstOne' is expected.
A Map as Fotiman suggests is good idea.
To fit in with existing code
var thumbNo = 1;
map = ['firstOne', ....
var price = my_data.Range.SmallFamily[map[thumbNo-1]].price;
$(this).html('<img src="/comparetherange/images/' +
+ '" alt="">');