scrollTop animation possible, scrollLeft not?

scrollTop animation possible, scrollLeft not?

  1.     $("html, body").animate(
  2.     { scrollTop: ((savedepth > 1) ? ($(node).offset().top) : 0),
  3.       scrollLeft: 200 }, {duration: 45+45*depth, queue: false }, 0);

The above works for animating vertically, but not horizontally.  Even if animation is not possible how do I left-adjust the page?  I am trying to create an effect where the clicked node in a tree display is positioned at the top left of the viewport (where the depth effects how right-adjusted it is); right now I can only get it to the top.