Alert Dialog MessageBox
<html> <head> <title>Hello World Window</title> <link rel="stylesheet" type="text/css" href="ext-3.0.0/resources/css/ext-all.css" /> <script type="text/javascript" src="ext-3.0.0/adapter/ext/ext-base.js"></script> <script type="text/javascript" src="ext-3.0.0/ext-all.js"></script> <script type="text/javascript" src="ext-3.0.0/examples/form/states.js"></script> </head> <body> <script type="text/javascript"> Ext.onReady(function() { Ext.MessageBox.alert('Hello', 'The DOM is ready!'); }); </script> <div id='panel'>asdf</div> </body> </html>