web thumbnail , display photo from folder

My website have folder, e.g. gallery folder, it have a lot of jpg and gif files, it may over 2000 photo. each photo file name is different. Now I want to looking someone create web page , display Beautiful thumbnail , the thumbnail read from gallery folder. The thumbnail style like attached [login to view URL] , but I need each column display 8 photo, not 4 photo. Because it have a lot of photo in gallery folder, so it will not display all photos immediately, when the user scroll down the mouse, it will loading another photo, please see attached gallery2.jpg. When click specific thumbnail, it will display popup window and display the photo in center, zoom in the photo, In popup window, it have prev and next button like attached [login to view URL] and X close button, the user click select next button to see the next photo , without close the popup window. The thumbnail and color style like [login to view URL] , you may refer it, but I just need simple thumbnail features. You should use php, ajax to do these project.