EXT layout

createCenterPanel: function () {
            var pan = Ext.create(‘Ext.Panel‘, {
                height: ‘100%‘,
                title: ‘项目管理‘,
                frame: true,
                region: ‘center‘,
                layout: {
                    type: ‘vbox‘
                },
                items: [
                  ProjectManage.ProjectEveryday.getGrid1(),
                  ProjectManage.ProjectEveryday.getGrid()
                ]
            });
            return pan;
        },

            var grid = Ext.create(‘Ext.grid.Panel‘, {
                flex: 5,
                width:‘100%‘,//vbox必须加
                title: "项目人员",
                region: ‘south‘,
                id: ‘project_members_grid‘,
                bbar: pagebbar,
                floatable: false,
                border: false,
                columnLines: true,
                store: store,