Hello World!

So to get a simple example running, it's as easy as:

<script type="text/javascript" src="../adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../ext-all.js"></script>
<link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css"/>

<script>
    Ext.onReady(function() {
        Ext.Msg.alert('Ext', 'Hello world!');
    });
</script>

...and you should see this: