http://alxgbsn.co.uk/2011/10/17/enable-css-active-pseudo-styles-in-mobile-safari/
document.addEventListener("touchstart", function() {},false);
html {
-webkit-tap-highlight-color: rgba(0,0,0,0);
}
Enable CSS active pseudo styles in Mobile Safari
原文：http://www.cnblogs.com/zyip/p/4603407.html