If the plat map and photo are simple images (not Flash), then all you need to do is use your mouse to:
1. Right click the image.
2. From the list of options choose "Save image as..." to save to your hard drive.
That cannot be done with Flash animate images or a simple static Flash image. For example, many web advertisements are based on Flash and if you right click it the last option will be "About Adobe Flash Player...".
To capture a Flash image requires additional steps. First you need a simple image editor so that you can edit images. I recommend IrfanView which is a free program.
1. On the page with the Flash image, press the "Prt Scrn" key.
2. Launch IrfanView then go to Edit, then Paste.
3. Press and hold the left mouse button to create a rectangular outline around the image. When the image has been outlined release the mouse button.
4. If unsatisfied repeat step #3.
5. With the outline still visible, go to Edit, then "Crop Selection".
6. Save the cropped image on your hard drive.
IrfanView:
http://www.irfanview.com/