<zk>
	<div xmlns:w="client">
		<script>
			function handleBlur(){
				var text = zk('$target').$().getValue() + 'did blur - ';
				console.log(text);
				zk('$target').$().setValue(text);
				
			}
		</script>
			<textbox id="tx1" w:onBlur="handleBlur()" />
			<menupopup id="mp">
				<menuitem label="test popup" />	
			</menupopup>
			<button onClick="mp.open(self)"/>
		</div>
	<textbox width="600px" id="target"/>
</zk>