magnific-popup 一款优秀, 多种功能于一身的弹出层jQuery插件.

功能很强大:
灯箱, 画廊, 放大图片, 弹出Youtube GoogleMap, ajax读取popup等等
文档:
http://dimsemenov.com/plugins/magnific-popup/documentation.html
Examples:
http://dimsemenov.com/plugins/magnific-popup/