Move getMenusForScope to the end of the View class.
Adhering to our principle that we the methods we use for generating our menus can be usually found at the bottom of the View class.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>{#example_dlg.title}</title>
<script type="text/javascript" src="../../tiny_mce_popup.js"></script>
<script type="text/javascript" src="js/dialog.js"></script>
</head>
<body>
<form onsubmit="ExampleDialog.insert();return false;" action="#">
<p>Here is a example dialog.</p>
<p>Selected text: <input id="someval" name="someval" type="text" class="text" /></p>
<p>Custom arg: <input id="somearg" name="somearg" type="text" class="text" /></p>
<div class="mceActionPanel">
<div style="float: left">
<input type="button" id="insert" name="insert" value="{#insert}" onclick="ExampleDialog.insert();" />
</div>
<div style="float: right">
<input type="button" id="cancel" name="cancel" value="{#cancel}" onclick="tinyMCEPopup.close();" />
</div>
</div>
</form>
</body>
</html>