jQuery zTree如何改变指定节点文本样式

<SCRIPT type="text/javascript"> 
  <!-- 
  var setting = { 
    view: { 
      fontCss: getFont, 
      nameIsHTML: true 
    } 
  }; 
  var zNodes =[ 
    { name:"粗体字", <span style="color: #ff0000;">font:{'font-weight':'bold'}</span> }, 
    { name:"斜体字", font:{'font-style':'italic'}}, 
    { name:"有背景的字", font:{'background-color':'black', 'color':'white'}}, 
    { name:"红色字", font:{'color':'red'}}, 
    { name:"蓝色字", font:{'color':'blue'}}, 
    { name:"<span style='color:blue;margin-right:0px;'>view</span>.<span style='color:red;margin-right:0px;'>nameIsHTML</span>"}, 
    { name:"zTree 默认样式"} 
  ]; 
  function getFont(treeId, node) { 
    return node.font ? node.font : {}; 
  } 
  $(document).ready(function(){ 
    $.fn.zTree.init($("#treeDemo"), setting, zNodes); 
  }); 
  //--> 
</SCRIPT> 

<SCRIPT type="text/javascript"> 
  <!-- 
  var setting = { 
    data: { 
      simpleData: { 
        enable: true 
      } 
    } 
  }; 
  var zNodes =[ 
    { id:1, pId:0, name:"展开、折叠 自定义图标不同", open:true, iconOpen:"../../../css/zTreeStyle/img/diy/1_open.png", iconClose:"../../../css/zTreeStyle/img/diy/1_close.png"}, 
    { id:11, pId:1, name:"叶子节点1", icon:"../../../css/zTreeStyle/img/diy/2.png"}, 
    { id:12, pId:1, name:"叶子节点2", icon:"../../../css/zTreeStyle/img/diy/3.png"}, 
    { id:13, pId:1, name:"叶子节点3", icon:"../../../css/zTreeStyle/img/diy/5.png"}, 
    { id:2, pId:0, name:"展开、折叠 自定义图标相同", open:true, icon:"../../../css/zTreeStyle/img/diy/4.png"}, 
    { id:21, pId:2, name:"叶子节点1", icon:"../../../css/zTreeStyle/img/diy/6.png"}, 
    { id:22, pId:2, name:"叶子节点2", icon:"../../../css/zTreeStyle/img/diy/7.png"}, 
    { id:23, pId:2, name:"叶子节点3", <span style="color: #ff0000;">icon:"../../../css/zTreeStyle/img/diy/8.png"</span>}, 
    { id:3, pId:0, name:"不使用自定义图标", open:true }, 
    { id:31, pId:3, name:"叶子节点1"}, 
    { id:32, pId:3, name:"叶子节点2"}, 
    { id:33, pId:3, name:"叶子节点3"} 
  ]; 
  $(document).ready(function(){ 
    $.fn.zTree.init($("#treeDemo"), setting, zNodes); 
  }); 
  //--> 
</SCRIPT> 

$(document).ready(function(){ 
  $.fn.zTree.init($("#treeDemo"), setting, zNodes); 
  zTree = $.fn.zTree.getZTreeObj("treeDemo"); 
  rMenu = $("#rMenu"); 
  setTimeout("updateDev()",1000);  // 在初始化树之后，开始更新状态，就别用setInterval了 
}); 
var baseImgPath = "<%=basePath%>img/";   // basePath是通过JSP获得的系统根路径，不用相对路径 
function updateTree(){ 
  toDwr.getAllCode(function back(values){ 
    if(null != values && ""!=values){ 
      for(var code in values){ 
        <span style="color: #ff0000;">var node = zTree.getNodeByParam("id", code, null);</span> // 每个树都有编号，通过编号找节点 
        if(null != node){ 
          <span style="color: #ff0000;">node.font={'color':'red'};</span>      // 设置文本样式，这里设置文本颜色 
          <span style="color: #ff0000;">node.icon=baseImgPath+"monitor.png";</span> // 设置节点图标 
          zTree.updateNode(node);       // 更新该节点 
        } 
      } 
    } 
    setTimeout("updateTree()",1000); 
  } 
}