How to make a div update the content with a sliding effect (animation similar to flash)?

Could you please tell me how this photo animation effect is achieved - see the pictures that slide seamlessly to the left every say 3 seconds (the pictures just below the BIGSTOCKPHOTO logo).. Site- www.bigstockphoto.com

I have noted this effect being used in many other sites.. And none of them seem to employ flash for making this. Please let me know whether this is just JS or whether its purely a CSS based effect, and probably 开发者_StackOverflow社区a place where i can read on how to make this.

Thanks.

here you go..

example: http://cssglobe.com/lab/easyslider1.7/01.html

info: http://cssglobe.com/post/5780/easy-slider-17-numeric-navigation-jquery-slider