add: return this; 
context: 	setProperties: function(properties){		for (var property in properties) this.setProperty(property, properties[property]);	},
meta: 7052	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7052/ac5db5586d151d789d5c8a4a103af3353bffaedd/Element.js/clean/Element/Element.js