The Image viewlet allows embedding of images directly into a viewlet.  Images can be linked from 3rd party websites or served locally from the Niagara server.  

Configuration

• Image (URL or Tag) - allows switching of image source.  
• URL - the URL pointing to the image file
• Tag - The tag name on the current context that contains a URL to the image 

URL vs. Tag Mode

When in URL mode the configuration will contain a single "URL" property which can be configured to point to a static image file.  Tag mode allows a dynamic image, which can do things such as change based off of the currently selected context.  For example, let's say each site in your database contains an "image" tag pointing to a building image.  The Image viewlet could be set up to dynamically change based off of which site was selected.  To do this, you would:

1. Set the Image mode to "Tag"
2. Set the "imageTag" property to "image" (since "image" is the name of the tag on the site that contains an image URL)