elem.jquery ? elem[ 0 ] : elem
);
},
add: function( selector, context ) {
var set = typeof selector === "string" ?
jQuery( selector, context ) :
jQuery.makeArray( selector && selector.nodeType ? [ selector ] : selector ),
all = jQuery.merge( this.get(), set );
return this.pushStack( jQuery.unique(all) );
},
addBack: function( selector ) {
return this.add( selector == null ?
this.prevObject : this.prevObject.filter(selector)
);
}
});
function sibling( cur, dir ) {
while ( (cur = cur[dir]) && cur.nodeType !== 1 ) {}
return cur;
}
jQuery.each({
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 sibling( elem, "nextSibling" );
},
prev: function( elem ) {
return sibling( elem, "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.merge( [], elem.childNodes );
}
}, function( name, fn ) {
jQuery.fn[ name ] = function( until, selector ) {
var matched = jQuery.map( this, fn, until );
if ( name.slice( -5 ) !== "Until" ) {
selector = until;
}
if ( selector && typeof selector === "string" ) {
matched = jQuery.filter( selector, matched );
}
if ( this.length > 1 ) {