- function root( elem, cur ) {
- return jQuery.nodeName(elem, "table") ?
- (elem.getElementsByTagName("tbody")[0] ||
- elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
- elem;
+ var nodeName = dest.nodeName.toLowerCase();
+
+ // clearAttributes removes the attributes, which we don't want,
+ // but also removes the attachEvent events, which we *do* want
+ dest.clearAttributes();
+
+ // mergeAttributes, in contrast, only merges back on the
+ // original attributes, not the events
+ dest.mergeAttributes(src);
+
+ // IE6-8 fail to clone children inside object elements that use
+ // the proprietary classid attribute value (rather than the type
+ // attribute) to identify the type of content to display
+ if ( nodeName === "object" ) {
+ dest.outerHTML = src.outerHTML;
+
+ } else if ( nodeName === "input" && (src.type === "checkbox" || src.type === "radio") ) {
+ // IE6-8 fails to persist the checked state of a cloned checkbox
+ // or radio button. Worse, IE6-7 fail to give the cloned element
+ // a checked appearance if the defaultChecked value isn't also set
+ if ( src.checked ) {
+ dest.defaultChecked = dest.checked = src.checked;
+ }
+
+ // IE6-7 get confused and end up setting the value of a cloned
+ // checkbox/radio button to an empty string instead of "on"
+ if ( dest.value !== src.value ) {
+ dest.value = src.value;