http://www.rickeletron.com.br/js/prototype/validation.js
http://www.skalojavirtual.com.br/js/prototype/validation.js
http://www.ziph.com.br/js/prototype/validation.js
http://www.pressureparts.com/js/prototype/validation.js
http://www.joalheriaouroprata.com.br/js/prototype/validation.js