61       node.left = this.root_;
66       node.left = this.root_.left;
67       this.root_.left = null;
90     if (!this.root_.left) {
94       this.root_ = this.root_.left;
130     while (current.left) {
131       current = current.left;
167     } else if (this.root_.left) {
168       return this.findMax(this.root_.left);
216     var dummy, left, right;
217     dummy = left = right = new SplayTree.Node(null, null);
221         if (!current.left) {
224         if (key < current.left.key) {
226           var tmp = current.left;
227           current.left = tmp.right;
230           if (!current.left) {
235         right.left = current;
237         current = current.left;
245           current.right = tmp.left;
246           tmp.left = current;
253         left.right = current;
254         left = current;
261     left.right = current.left;
262     right.left = current.right;
263     current.left = dummy.right;
264     current.right = dummy.left;
283       nodesToVisit.push(node.left);
304   SplayTree.Node.prototype.left = null;  method in SplayTree.Node