text: var mask = null;
  Ext.application({
  			name : "MyApp",
  			appFolder : 'app',
  			autoCreateViewport:false,
  			controllers : ["NoticeInfo"],
  			launch : function() {
  				Ext.BLANK_IMAGE_URL = blank_img_url;
  				// 页面加载完成之后执行
  				Ext.create('Ext.container.Viewport', {
  					layout : "fit",
                      id: 'vpcViewport',
                      border: '0 0 0 0',
                      //自定义方块背景
                      cls: "bgSquare",
                      border: false,
  					items : {
  						xtype : "noticeInfoMain"
  					}
  				});
  				mask = new Ext.LoadMask( Ext.getBody(),{msg:"请稍候片刻..."});
  			}
  		});