How to convert Java Map to a basic Javascript object?

I'm starting to use the dynamic rhinoscript feature in Java 6 for use by customers who are more likely to know Javascript than Java.

What is the best way to pass a Map (associative array, javascript obj, whatever) into Javascript so the script-writers can use the standard Javascript dot notation for accessing values?

I'm currently passing a java.util.Map of values into the script, however then the script writer has to write "map.get('mykey')" instead of "map.mykey".

Basically, I want to do the opposite of this question.