Admin remove dropdown menus

add_action('admin_head','remove_contextual_dropdowns');
 
 
function remove_contextual_dropdowns(){
 
	echo "<style type='text/css' media='screen'>#update-nag{display:none;}#toplevel_page_wp-e-commerce-display-log{display:none}</style>";
 
	echo "<style type='text/css' media='screen'>#screen-options-link-wrap{display:none;}</style>";
	echo "<style type='text/css' media='screen'>#contextual-help-link-wrap{display:none;}</style>";
 
	echo "<style type='text/css' media='screen'>#toplevel_page_wpcf7{display:none;}</style>";
	echo "<style type='text/css' media='screen'>#favorite-actions{display:none}</style>";
 
	echo "<style type='text/css' media='screen'>.update-nag{display:none}</style>";
 
}