http://3d-viewers.com/templates/waybeyond/lib/js/addons/dropdownmenu.js
http://larc-gallery.ru/templates/yoo_tweety/lib/js/addons/dropdownmenu.js
http://kelafas.gr/templates/yoo_pinboard/lib/js/addons/dropdownmenu.js
http://spielwerk.eu/templates/yoo_motion/lib/js/addons/dropdownmenu.js