Are there any better javascript org charts compared with Google Org Chart API?

Question

We are using google org chart API to display our org charts. This works well but we need something that supports:

1. One person reporting to multiple managers
2. Co heads of a functional areas.

Are there any competing tools that give better support for the above.

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NOTE: For Gorka LLona, who suggested this solution below in one of the answers, i found a few bugs, here is a screenshot of the issue i am running into using your test example.

Answer 1

You could use Jit (The JavaScript Infoviz Toolkit), there's a good example here. This is what I used to create an org chart at my company (backed by a PHP script that turns AD relationships into JSON).