States if the current page, in the user's browser, is being rendered using the [http://www.w3.org/TR/REC-CSS2/box.html W3C CSS Box Model].
Returns the box model for the iframe.
$("p").html("The box model for this iframe is: " +
jQuery.boxModel + "");
<p>
</p>
Returns false if the page is in QuirksMode in Internet Explorer
$.boxModel
false