+ if ( !matches[selector] ) {
+ matches[selector] = jQuery.expr.match.POS.test( selector ) ?
+ jQuery( selector, context || this.context ) :
+ selector;
+ }
+ }
+
+ while ( cur && cur.ownerDocument && cur !== context ) {
+ for ( selector in matches ) {
+ match = matches[selector];
+
+ if ( match.jquery ? match.index(cur) > -1 : jQuery(cur).is(match) ) {
+ ret.push({ selector: selector, elem: cur });
+ delete matches[selector];
+ }
+ }
+ cur = cur.parentNode;
+ }
+ }
+
+ return ret;
+ }
+
+ var pos = jQuery.expr.match.POS.test( selectors ) ?
+ jQuery( selectors, context || this.context ) : null;
+
+ return this.map(function(i, cur){