Viewing larger images from thumbnails in HTML?

We are making a website and Relating to plenty of images about the pages, listed here is a link to among the pages:

http://www.tonyspigeonphotos.com/Full_Body_Pictures.php

What I want to know, is instead of clicking for a picture plus viewing the particular larger image on a separate page then likely to have to look back in the browser, can one do at Html code to mouse click on the snapshot to show the large image, then click once more to allow it to be size back down to the thumbnail

You will be better out of using Lightbox or Shadowbox:

Lightbox A COUPLE OF:
http://www.huddletogether.com/projects/lightbox2/
Shedding Some Light on Lightbox:
http://www.webreference.com/programming/javascript/Lightbox/
VisualLightBox is often a free magician program that can help you easily yield online photography albums, lightbox gallery which has a nice Lightbox-style overlay consequence, in a couple of clicks devoid of writing one particular line associated with code:
http://lightbox2.com/lightbox2-how.html

Shadowbox (Like Lightbox):
http://www.shadowbox-js.com/

Ron

<a href="sample.jpg" onclick="NewWindow(this.href, 'IMAGE', '40 false;