雙日曆選擇器

http://www.jqueryfuns.com/resource/822

http://www.51ebk.com/html/1108.html

http://www.cnblogs.com/Ricky-Huang/p/5691821.html

http://www.wangzhanbaoku.com/wangzhanchangyong/14.html

HTML5 CSS3双联的日期选择器，支持时间区间自定义

http://www.srcfans.com/jscode/jscss/3735.shtml