ExtJs在页面上window再调用Window的事件处理

var actInfoWindow2;
function showCallFlowInfoWindow(flowid, actId) {
	var actWindowHeight1 = window.innerHeight
	|| document.documentElement.clientHeight
	|| document.body.clientHeight;
	if(null != upldWin && undefined != upldWin && "" != upldWin){
		upldWin.close();
	}
	// 异常活动模型
	Ext.define(‘callFlowModel‘, {
		extend: ‘Ext.data.Model‘,
        fields: [{name: ‘instance‘,  type: ‘string‘},
                 {name: ‘flowName‘,  type: ‘string‘},
                 {name: ‘prjName‘,  type: ‘string‘},
                 {name: ‘startTime‘,   type: ‘String‘}]
	});
	
	callFlowStore = Ext.create(‘Ext.data.Store‘, {
		autoLoad : true,
		model : ‘callFlowModel‘,
		proxy : {
			type : ‘ajax‘,
			url : ‘subflow.do‘,
			reader : {
				type : ‘json‘,
				root : ‘callFlowList‘,
				totalProperty : ‘total‘
			}
		},   
	    listeners: {  
	        ‘beforeload‘: function (store, op, options) {
	            var params = {  
	                //参数  
            		flowId : flowid,
            	    id : actId
	            };  
	            Ext.apply(store.proxy.extraParams, params);   
	        }  
	    }  
	});
	
	// 绑定数据模型flowColumns
	var callFlowColumns = [
    	{ text: ‘实例名‘,  dataIndex: ‘instance‘, width:174 },
    	{ text: ‘工程名‘,  dataIndex: ‘prjName‘,width: 174 },
    	{ text: ‘工作流名‘,  dataIndex: ‘flowName‘,width: 174 },
    	{ text: ‘启动时间‘,  dataIndex: ‘startTime‘,width: 174 }
   ];

	callFlowGrid = Ext.create(‘Ext.grid.Panel‘, {
		region : ‘center‘,
		//tbar:querybar,
		id:‘callFlowList‘,
		autoScroll : false,
		border:false,
		//columnLines : true,
		//selModel:selModel,
		//bbar : pageBar,
		columns : callFlowColumns,
		store : callFlowStore,
		loadMask : {
			msg : " 数据加载中，请稍等 "
		}
	});
	
	if (actInfoWindow2 == undefined || !actInfoWindow2.isVisible()) {
		actInfoWindow2 = Ext.create(‘Ext.window.Window‘, {
			id : ‘actInfoWindow2‘,
			title : ‘活动信息详情‘,
			modal : true,
			closeAction : ‘destroy‘,
			constrain : true,
			autoScroll : true,
			width : 700,
			height : actWindowHeight1 - 300,
			items : [ callFlowGrid ],
			listeners:{
			      beforeclose:function(){
			    	  actInfoWindow2.destroy();
			      }
			}
		});
	}
	actInfoWindow2.show();
}