combotree 加载完毕后全部展开

 $(function(){
    $('#cc').combotree({
        url:'xx.do',
        method:'get',
        multiple:'false',
        onLoadSuccess:function(node,data){
        for (var i=0;i<data.length ;i++ ){
            var node = $("#cc").combotree('tree').tree("find",data[i].id);            
            $("#cc").combotree('tree').tree('expandAll',node.target);//展开所有节点 
         }
        }   
    }); 
})