It is possible—indeed, in some senses, it is the point of this test page—that IE/Win may crash or act in peculiar ways on this page.
div with an id that has a value of length. It may cause conflicts with IE/Win's document.length.
The following problems are known in IE/Win:
Any attempt to reference document.all.length via scripting in IE/Win will return an object corresponding to the ID'ed element. This could cause severe problems for scripts that rely on document.all.length method that usually exists.
JS test-- fails if the result is '[object]'.