A jQuery plugin that autocomplete email address in input fields.
http://www.zhangshuzheng.cn/autoMail/demo/
$('#email1,#email2,#email3,#email4,#email5,#email6').autoMail({
emails:['qq.com','163.com','126.com','sina.com','sohu.com','yahoo.cn','gmail.com','hotmail.com','live.cn']
}); 
MIT