Tests the behavior of document.scrollingElement in quirks mode.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


In quirks mode the scrolling element is `BODY`
PASS document.scrollingElement is document.body
PASS document.scrollingElement is document.body
PASS document.scrollingElement is document.body
In quirks mode, if the `BODY` is scrollable, the scrolling element is `null`
INTENTIONAL FAILURE. This can be fixed once https://bugs.webkit.org/show_bug.cgi?id=106133 is fixed.
FAIL document.scrollingElement.scrollingElement should be null (of type object). Was undefined (of type undefined).
In quirks mode, if the `BODY` is `display: none`, the scrolling element is `BODY`
PASS document.scrollingElement is document.body
PASS successfullyParsed is true

TEST COMPLETE