MzTree研究

onkeydown事件
this.onkeydown= function(e)
  {
    e = window.event || e; var key = e.keyCode || e.which;
    switch(key)
    {
      case 37 : eval(Tname).upperNode(); break;  //Arrow left, shrink child node
      case 38 : eval(Tname).pervNode();  break;  //Arrow up
      case 39 : eval(Tname).lowerNode(); break;  //Arrow right, expand child node
      case 40 : eval(Tname).nextNode();  break;  //Arrow down
    }
  };