code: function(thing, styles) {
  			var element = thing instanceof gui.Spirit ? thing.element : thing;
  			gui.Object.each(styles, function(prop, value) {
  				this.set(element, prop, value);
  			}, this);
  			return thing;
  		}
docs: Set multiple element.style properties via hashmap. Note that
  this method returns the element (ie. it is not chainable).
  @param {Element|gui.Spirit} thing Spirit or element.
  @param {Map<String,String>} styles
  @returns {Element|gui.Spirit}