scroll event in asp.net

hi

I'm working with web application using asp.net c#.

in my page i need to show 1000+ thumbnails.
i'm using datalist to bind thumbnails.
i'm loading all thumbnails at a page load. datalist is available div. loading all image takes 5+ min. up to that i'm unable to do another works. in ie parant page loading 1000+ images. i'm clicking image it'll open popup screen for slide show. but upto complete base page popup not working. once parent page completed popup works fine.

o ...