http://cloversearch.net/script/prototype.js
http://www.stonesthrow.com/sf/prototype/js/prototype.js
http://www.rentersnet.jp/sf/prototype/js/prototype.js
http://fotonomy.com/template/js/prototype.v1.5.1.js
http://www.architektura.info/extension/selfdesign/design/selfdesign/javascript/prototype.js
http://architektura.info/extension/selfdesign/design/selfdesign/javascript/prototype.js
http://idnovo.com.cn/include/js/prototype-1.5.1.2.js