Graphical variation of the text navigation script. I've done several variants like this in the past and have experienced with Netscape Navigator locking up if the image navigation bar is at the top of the page if the images are too big - BEWARE!. The advantage over the text version is that it looks better but the main disadvantage is that it takes longer to download, especially over a slow network.
Use your browser's 'View Source' command to view the page, the script is invoked by the show_header() call at the start of the page. View the web development page in non-frames mode to see how the current section of a page is not made into a link.
Try moving the cursor over the navigation images to see the mouse over effects.
Try clicking on the following link to use frames and see how links can be targetted at different frames - Home will zap all frames and load itself as the top and only frame, Feedback will display itself in a new window, the other pages will be displayed in the right hand frame.
Click here to view the page without frames.