52       left:  GeneratePayloadTree(depth - 1, tag),
168     node.left = this.root_;
173     node.left = this.root_.left;
174     this.root_.left = null;
197   if (!this.root_.left) {
201     this.root_ = this.root_.left;
258   } else if (this.root_.left) {
259     return this.findMax(this.root_.left);
297   var dummy, left, right;
298   dummy = left = right = new SplayTree.Node(null, null);
302       if (!current.left) {
305       if (key < current.left.key) {
307         var tmp = current.left;
308         current.left = tmp.right;
311         if (!current.left) {
316       right.left = current;
318       current = current.left;
326         current.right = tmp.left;
327         tmp.left = current;
334       left.right = current;
335       left = current;
342   left.right = current.left;
343   right.left = current.right;
344   current.left = dummy.right;
345   current.right = dummy.left;
365 SplayTree.Node.prototype.left = null;  method in SplayTree.Node
384     var left = current.left;
385     if (left) left.traverse_(f);