If you are trying to add a hyperlink that is an image onto the page of your publication, such as a button or banner, use the html interactivity type.
This will allow you to put custom HTML code for your image button:
<a href="http://website.com" target="_blank" border="0"><img src="path to your image" /></a>
<a href="http://website.com" target="_blank" border="0"><img src="path to your image" /></a>