referencing resources from the root of the classpath

[Michael Allman]

Is there a way to reference a resource from the root of the classpath? 
For example, say I have a script called util.js and I put it in the root 
of my application's classpath, which is a filesystem-backed classpath. 
Is there a way to reference it in WTKX?  I was thinking "/util.js" or 
"util.js" but neither work.  Well, the latter doesn't work unless the file 
from which I'm referencing it is also in the root of the classpath.

Cheers,
Michael