First of all, thank you for you answer. I'm reading it.
Unfortunately the solution you show is not good for me: the svg in example was only an example. The real svg+javascript is a more complex interactive animation, so I can not use a table instead (you can see the real svg in the second half of this video:
https://www.facebook.com/fabrizio.ve...1500225007241/).
Thanks again for the message.
f.