Thank you :)
Just to clarify, there are no server-side software, the "conversion" program runs offline and produces a javascript file with all the model vertices etc. You can see it here. The js is included in the html and then everything run off the client.

The reason i decided not to do even the parsing in javascript is becouse, while the ldraw format is easy to read, it is quite tricky to work with. And also, if you implement the parsing in javascript, you must have some way to load part files ad needed, and that mean having a web server with all the library loaded (i don't know, maybe one exists?). Given that, probably it could work!

Now i want to try to integrate the program with a better 3d library such as Three.js