Hi Robert

I don't think you need a global for this.

Add an image column in your category table,then in subcategory call it via:

<%-- This is only useful if you have added an Image column to your category table --%>
<%if Image%>
<img src="<%build_root_url%>/images/<%Image%>">
<%else%>
<img src="<%build_root_url%>/images/standard_image.gif">
<%endif%>

Regards

minesite