DOMNodeList goodness that all nodelists should have. Change some JS to not break, and some other JS to be a little more efficient with the new world of lazy listness. Bug 240186, r=neil on the JS changes, r=jst on the content changes, sr=jst git-svn-id: svn://10.0.0.236/trunk@154907 18797224-902f-48f8-a5cc-f745e15eee43