/**
*外部组件属性：layout: 'column'，内部组件属性：layout: 'form'并且加入defaults: {anchor:'90%'}属性
*/
var north = new Ext.FormPanel({region: 'north',margins: '0 0 2 0',cmargins: '0 0 2 0',formId: 'searchForm',frame:true,height: 100,width: '100%',defaults: {width: '100%'},collapsible:true,layout: 'column',//重点items:[{layout:'column',//重点columnWidth:.99,height: 25,border:false,labelSeparator:'：',items:[{defaults: {anchor:'90%'},//设置此属性columnWidth:.25,layout: 'form',//重点border:false,items: [classifier]}]}],buttons : [{text : '查询',iconCls : 'btn_ico_query',handler : search}, {text : '重置',iconCls : 'btn_ico_remove',handler : clear}]});