+ div = document.createElement("div");
+ div.innerHTML = "<input type='radio' name='radiotest' checked='checked'/>";
+
+ var fragment = document.createDocumentFragment();
+ fragment.appendChild( div.firstChild );
+
+ // WebKit doesn't clone checked state correctly in fragments
+ jQuery.support.checkClone = fragment.cloneNode(true).cloneNode(true).lastChild.checked;
+
+ // Figure out if the W3C box model works as expected
+ // document.body must exist before we can do this
+ jQuery(function() {
+ var div = document.createElement("div");
+ div.style.width = div.style.paddingLeft = "1px";
+
+ document.body.appendChild( div );
+ jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
+ document.body.removeChild( div ).style.display = 'none';