- parent: function(elem){return elem.parentNode;},
- parents: function(elem){return jQuery.dir(elem,"parentNode");},
- parentsUntil: function(elem,i,until){return jQuery.dir(elem,"parentNode",until);},
- next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
- prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
- nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
- prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
- nextUntil: function(elem,i,until){return jQuery.dir(elem,"nextSibling",until);},
- prevUntil: function(elem,i,until){return jQuery.dir(elem,"previousSibling",until);},
- siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
- children: function(elem){return jQuery.sibling(elem.firstChild);},
- contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
-}, function(name, fn){
+ parent: function( elem ) {
+ var parent = elem.parentNode;
+ return parent && parent.nodeType !== 11 ? parent : null;
+ },
+ parents: function( elem ) {
+ return jQuery.dir( elem, "parentNode" );
+ },
+ parentsUntil: function( elem, i, until ) {
+ return jQuery.dir( elem, "parentNode", until );
+ },
+ next: function( elem ) {
+ return jQuery.nth( elem, 2, "nextSibling" );
+ },
+ prev: function( elem ) {
+ return jQuery.nth( elem, 2, "previousSibling" );
+ },
+ nextAll: function( elem ) {
+ return jQuery.dir( elem, "nextSibling" );
+ },
+ prevAll: function( elem ) {
+ return jQuery.dir( elem, "previousSibling" );
+ },
+ nextUntil: function( elem, i, until ) {
+ return jQuery.dir( elem, "nextSibling", until );
+ },
+ prevUntil: function( elem, i, until ) {
+ return jQuery.dir( elem, "previousSibling", until );
+ },
+ siblings: function( elem ) {
+ return jQuery.sibling( elem.parentNode.firstChild, elem );
+ },
+ children: function( elem ) {
+ return jQuery.sibling( elem.firstChild );
+ },
+ contents: function( elem ) {
+ return jQuery.nodeName( elem, "iframe" ) ?
+ elem.contentDocument || elem.contentWindow.document :
+ jQuery.makeArray( elem.childNodes );
+ }
+}, function( name, fn ) {