$(function(){ 
	    //此处是扩展tree的两个方法. 
	    $.extend($.fn.tree.methods,{ 
	        getCheckedExt: function(jq){//扩展getChecked方法,使其能实心节点也一起返回 
	            var checked = $(jq).tree("getChecked"); 
	            var checkbox2 = $(jq).find("span.tree-checkbox2").parent(); 
	            $.each(checkbox2,function(){ 
	                var node = $.extend({}, $.data(this, "tree-node"), { 
	                    target : this 
	                }); 
	                checked.push(node); 
	            }); 
	            return checked; 
	        }, 
	        getSolidExt:function(jq){//扩展一个能返回实心节点的方法 
	            var checked =[]; 
	            var checkbox2 = $(jq).find("span.tree-checkbox2").parent(); 
	            $.each(checkbox2,function(){ 
	                var node = $.extend({}, $.data(this, "tree-node"), { 
	                    target : this 
	                }); 
	                checked.push(node); 
	            }); 
	            return checked; 
	        } 
	    }); 
	});