THis can be very useful if you have a gifs page. Get the code here
In the head put the full size pics, ie babe1.jpg and in the body put the thumbnails ie babe1a.jpg. Where it says (img name="previewpic" src="babe1a.jpg" put your first thumbnail where it says babe1a.jpg. Add more pics by adding to the code in the head and to the options in the form.