// check if an element is in a (or is an) XML document
isXMLDoc: function( elem ) {
- return elem.documentElement && !elem.body ||
- elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
+ return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
+ !!elem.ownerDocument && jQuery.isXMLDoc( elem.ownerDocument );
},
// Evalulates a script in a global context