I've run into a roadblock today when I discovered that variables such as ${nodename} don't work the Custom HTML or Text resource. Below is an example of what I'm trying to do, but doesn't work with variables.
<IMG ALT="Camera" SRC="/Custom/Webcam/${nodename}/campic.jpg" BORDER="0"> </A>
What you get
servername/.../campic.jpg
Does anyone have a creative idea of how I could include some node specific custom HTML to the node details page?