text.xml

<?xml version="1.0"?>
<layout version="0.1.0">

	<anc_text_administrator_simpleowngallery>
		<reference name="content">
			<block type="anc_text/adminhtml_admingallery" name="simpleadmingallerytext" template="anc/text/simpleadmingallery.phtml" />
		</reference>		
	</anc_text_administrator_simpleowngallery>

</layout>