INSTRUCTIONS

Click on the image size you wish to save.
Once the image is enlarged:

Windows: Set the cursor over the image.  Right-click on the image and select "save image as."
 
or

Right-click on the image and select "Make this the background image." 
or "Set as Wallpaper."

Mac: Set the cursor over the image.  Hold down the mouse button and select "save image."
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You will be prompted to select a location 
on your hard drive to save the image(s) to.