If thumbnails do not enlarge when clicked, or the slide show does not start, it means that your web browser blocks pop-ups.  
If this is the case, please see the relevant section below:  Safari, Firefox, Internet Explorer, Other.  
To enlarge images and view slide shows, you need to have pop-ups enabled.  

By default, Safari blocks pop-ups and does not warn the user if a web page contains them.  
To allow pop-ups, in earlier versions in the menu bar click "Edit", in later versions click "Safari"; then, if it has a check mark next to it, click "Block Pop-up Windows" so that the checkmark disappears.  After viewing this website, you may prefer to re-block pop-ups.  

If Firefox blocks a pop-up, some versions will display the following message near the top of the page:
Firefox prevented this site from opening a popup window.
If this should happen, click "Options" and then click either the bottom line of the list or "Allow pop-ups for...".  
In some versions of Firefox, instead, in the menu bar click "Firefox"; then select "Preferences".  In the "Preferences" property sheet, click on "Content" and be sure
"Block pop-up windows" is not checked.  
If both methods are possible in your version, the first is reommended since it is a "temporary" measure.  

Internet Explorer (IE)
Note: In all versions of IE, the "Overview" button will give you a view of everything on the website.
IE Versions 5, 6, and 8 are stable. Some aspects of this website may hang with IE7.

If IE 6 is configured to block pop-ups, IE will display near the top the following message:
To help protect your security, Internet Explorer has restricted this webpage from running scripts or
ActiveX controls that could access your computer.   Click here for options... X
If this should happen, click on the message and select "Allow Blocked Content".  
You can then continue.  

If you wish to configure IE to allow pop-ups always (not recommended), click on "Tools".  
Then select "Popup blocker" followed by "Turn Off Pop-up Blocker".  
For more information, please see: "http://www.microsoft.com/windowsxp/using/web/sp2_popupblocker.mspx

Please consult the help option for your browser.