I have this site where you have thumbnails in left and right columns. Clicking on a thumbnail will load the main image in the center.
There are two ways I can do this:
Use ajax to load the main image in the center
Make thumbnails into anchor tags, clicking it will basically load a new page with a different main image in center
I like method 1 because it is fast, offers better user experience. But I like method 2 because search engines will be able to map the entire site by following the links.
Can I have a UI design that provides a fast user experience, and still have all the main images crawlable? May be I need a site map. What is the best design for this?