$.blockUI({//界面锁定之后 ，显示样式和提示消息                css: { width: ‘auto‘, left: ‘20px‘, right: ‘20px‘ },                message: ‘<h4>正在提交...<img src="http://www.mamicode.com/Images/small_loading.gif" align="absmiddle" /></h4>‘            });   

           $.unblockUI();