code: function(ed, e, s) {
  			var dom = ed.dom;
  
  			tinymce.each(dom.select('div,p', e), function(e) {
  				if (/^(absolute|relative|fixed)$/i.test(e.style.position)) {
  					if (s)
  						dom.addClass(e, 'mceItemVisualAid');
  					else
  						dom.removeClass(e, 'mceItemVisualAid');
  
  					dom.addClass(e, 'mceItemLayer');
  				}
  			});
  		}
docs: Private methods