Hidden Object

// Add Quicktags
function custom_tags() {

	if ( wp_script_is( 'quicktags' ) ) {
	?>
	<script type="text/javascript">
	QTags.addButton( 'hidden-object', 'Ocultar', '<span class="hidden-object">', '</span>', '', 'Ocultar', 1 );
	</script>
	<?php
	}

}

// Hook into the 'admin_print_footer_scripts' action
add_action( 'admin_print_footer_scripts', 'custom_tags' );