easyui layout 折叠后显示标题

$.extend($.fn.layout.paneldefaults, ...{ 
     onCollapse : function () ...{ 
         //获取layout容器 
         var layout = $(this).parents("li.layout"); 
         //获取当前region的配置属性 
         var opts = $(this).panel("options"); 
         //获取key 
         var expandKey = "expand" + opts.region.substring(0, 1).toUpperCase() + opts.region.substring(1); 
         //从layout的缓存对象中取得对应的收缩对象 
         var expandPanel = layout.data("layout").panels[expandKey]; 
         //针对横向和竖向的不同处理方式 
         if (opts.region == "west" || opts.region == "east") ...{ 
             //竖向的文字打竖,其实就是切割文字加br 
             var split = []; 
             for (var i = 0; i < opts.title.length; i++) ...{
                 split.push(opts.title.substring(i, i + 1)); 
             } 
             expandPanel.panel("body").addClass("panel-title").css("text-align", "center").html(split.join("<br>")); 
         }
         else
         ...{ 
             expandPanel.panel("setTitle", opts.title); 
         }

     } 
 });