I created a custom block with graphics showing up in the "options" part of the block. I want to add the smarty <{$xoops_url}> variable in the url for each image so that they are absolute, but the variable doesnt get interpreted when viewing the block on my live website.

What variable should I be using in a custom block to show the xoops_url for my website?

The reason Im trying to do this is to help me edit the custom block code in the backend using the FCKeditor, rather than edit the code in html with the default editor.