+ for ( var i = 0, j = this.length; i < j; i++ ) {
+ var cur = this[i];
+
+ while ( cur ) {
+ if ( pos ? pos.index(cur) > -1 : jQuery.find.matchesSelector(cur, selectors) ) {
+ ret.push( cur );
+ break;
+
+ } else {
+ cur = cur.parentNode;
+ if ( !cur.ownerDocument || cur === context ) {
+ break;
+ }
+ }