Ext.layout.FitLayout=Ext.extend(Ext.layout.ContainerLayout,{monitorResize:true,onLayout:function(a,b){Ext.layout.FitLayout.superclass.onLayout.call(this,a,b);if(!this.container.collapsed){this.setItemSize(this.activeItem||a.items.itemAt(0),b.getStyleSize())}},setItemSize:function(b,a){if(b&&a.height>0){b.setSize(a)}}});Ext.Container.LAYOUTS.fit=Ext.layout.FitLayout;