Make sure that we don't attempt to handle scrolling when the node is …

…disconnected from the document. Fixes #7190.

src/offset.js

@@ -23,14 +23,17 @@ if ( "getBoundingClientRect" in document.documentElement ) {
 
 		try {
 			box = elem.getBoundingClientRect();
+		} catch(e) {}
 
-		} catch(e) {
-			return { top: 0, left: 0 };
+		var doc = elem.ownerDocument,
+			docElem = doc.documentElement;
+
+		// Make sure we're not dealing with a disconnected DOM node
+		if ( !box || !jQuery.contains( docElem, elem ) ) {
+			return box || { top: 0, left: 0 };
 		}
 
-		var doc = elem.ownerDocument,
-			body = doc.body,
-			docElem = doc.documentElement,
+		var body = doc.body,
 			win = getWindow(doc),
 			clientTop  = docElem.clientTop  || body.clientTop  || 0,
 			clientLeft = docElem.clientLeft || body.clientLeft || 0,