palemoon-dev/platform/dom/svg/test/zoom-helper.svg

<?xml version="1.0"?>
<svg id="root" version="1.1" xmlns="http://www.w3.org/2000/svg" onzoom="parent.zoomHandler(evt)">
  <rect x="10" y="10" width="10" height="10" fill="green" />
</svg>