DOM 4 request

Hi Anne,

We are in the process of adding tabindex support to SVG and would like to
request that the activeElement attribute from HTML5,

readonly attribute Element? activeElement;

be included in the DOM4 Document Interface:
http://www.w3.org/TR/2012/WD-dom-20120405/#interface-document

It makes things simpler for us if it were included in DOM4 as SVG has a
tradition of using standard DOM features and this way it can be shared by
both HTML5 and SVG.

Please let us know if the DOM working group would support adding this
attribute.

Thank you,
Rich