I need a program that can traslate C3 to Java script?
You will need to do it yourself. There are actually a few projects that will attempt to convert C# to Javascript for you (like Michael Sync's Script# Converter), but the main problem is that the 'Javascript' in Unity is actually 'UnityScript' (as Dreamora says).
C# and Javascript/UnityScript are syntactically similar, and it's not a huge leap to move knowledge from one to the other. The script reference even has examples from both languages, so you can translate it across yourself, and learn as you go.
I didn't actually downvote your question - just retagged - but I think it's been treated quite harshly because this seems like a large-scale "write my code". It's not really the purpose of Unity Answers, and a quick Google search would give you the same information that I just did.
there is no such program and there will likely never be one as various things can not be translated as there is no unity script counterpart for them at all UnityScript is a subset featurewise of what C# offers, not a superset