在同一个屋檐下整个亚口鱼的家庭。jquery实现（儿子）亚口鱼。提供不显眼的模仿：悬停，：：：为目标，积极，不支持的浏览器的CSS伪类重点。-The entire Suckerfish family under one roof. jQuery implementation of (Sons of) Suckerfish. Provides unobtrusive mimicking of :hover, :active, :target and :focus CSS pseudo class for browsers that do not support them.