I don't see buttons

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
		<title>dojo buttons test page</title>
		<link rel="stylesheet" type="text/css" href="dojo/dijit/themes/tundra/tundra.css">
		<script type="text/javascript" src="dojo/dojo/dojo.js">
		</script>
		<script type="text/javascript" src="/claw/test/clawjs/claw.js">
		</script>

		<script type="text/javascript">
//<!--

djConfig={parseOnLoad:true,usePlainJson:true,isDebug:false};
dojo.require('dojo.parser');
dojo.require('dijit.form.Button');
dojo.require('dijit.Menu');
dojo.require('dojox.layout.ContentPane');
//-->
		</script>
	</head>
	<body class="tundra">
		<p>
			<a href="../test/index.html">home</a>
		</p>
		<p>
			<div dojotype="dijit.form.Button" id="djbutton">

				<span>djbutton</span>
			</div>
			<div dojotype="dijit.form.DropDownButton" id="djddbutton">
				<span>djdropdown-button</span>
				<div dojotype="dijit.Menu" id="menu_3">
					<div dojotype="dijit.MenuItem" id="menu" iconclass="dijitEditorIcon dijitEditorIconCopy">copy</div>
					<div dojotype="dijit.MenuItem" id="menu_1" iconclass="dijitEditorIcon dijitEditorIconCut">cut</div>

					<div dojotype="dijit.MenuItem" id="menu_2" iconclass="dijitEditorIcon dijitEditorIconPaste">paste</div>
				</div>
			</div>
			<div dojotype="dijit.form.ComboButton" id="djComboButton" iconclass="plusBlockIcon" optionstitle="save options">
				<span>combo button</span>
				<div dojotype="dijit.Menu" id="menu_6">
					<div dojotype="dijit.MenuItem" id="menu_4" onclick="alert('save')" iconclass="dijitEditorIcon dijitEditorIconSave">save</div>

					<div dojotype="dijit.MenuItem" id="menu_5" onclick="alert('save as')" iconclass="dijitEditorIcon dijitEditorIconSave">save as</div>
				</div>
			</div>
			<div dojotype="dijit.form.ToggleButton" id="djToggleButtonCheck" onchange="console.log('toggled button checked='+arguments[0]);" iconclass="dijitCheckBoxIcon">Toggle me</div>
			<div dojotype="dijit.form.ToggleButton" id="djToggleButtonRadio" onchange="console.log('toggled button checked='+arguments[0]);" iconclass="dijitRadioIcon">Toggle me</div>
		</p>
		<div dojotype="dojox.layout.ContentPane" executescripts="true" renderstyle="true" id="scripts-content-pane">

			<script type="text/javascript">
//<!--

//-->
			</script>
		</div>
	</body>
</html>