A first version to handle transparent element -- compiles and works on basic examples.
A first version to handle transparent element -- compiles and works on basic examples.

Ignore-this: 79b3949bdc96f19189a4095cd9767b8c

darcs-hash:20100711134617-99ab4-88089c65b86b1c099ac946e403186cbc61ae41ca

mfp/ocsigenserver,mfp/ocsigenserver