z-index imitation for D3 tree layout node

[nsharoyan]

Hi,

I'm actually working with some 3D visualization using D3 tree (which is not a common usage of it, I know :)) and I have an issue of showing one node to be 'behind' another one (kind of z-index imitation).

So I'm wondering if there is any native way to accomplish this, because my workarounds of changing positions of svg elements in the childNodes array of the parent were leading to swapping of nodes content in the tree.

Thanks

[mbostock]

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