| PASS null != subElem1 is true |
| PASS subElem1 is subElem1 |
| PASS null == svgTree1.getElementById('subElem2') is true |
| PASS null == svgTree1.getElementById('siblingElem1') is true |
| PASS null == svgTree3.getElementById('rect') is true |
| PASS null == svgTree3.getElementById('svgTree3') is true |
| PASS svgTree4.firstChild.nextSibling == root.getElementById('foo') is true |
| PASS svgTree5.firstChild.nextSibling == bar is true |
| PASS svgTree5.firstChild.nextSibling == svgTree5.getElementById('bar') is true |
| PASS foreign.firstChild.nextSibling == nonsvg is true |
| |
