SVG renderer's gradient referred to document.location.toString() + #hash...

..., which broke gradients in pages that already contains a hash

See: http://jsplumbtoolkit.com/demo/sourcesAndTargets/jquery.html#foo

Remove the hash from the URL, and the demo works again.

The :url() seems to work without the full URL, just the #gradient_id is needed. Might need some research, I only tested with Chrome.

Cheers!