jsで点滅させる

gistfile1.js

var lastSheet = document.styleSheets[document.styleSheets.length - 1];
if(lastSheet){
  lastSheet.insertRule("@-webkit-keyframes blink { from { opacity: 1.0; } to { opacity: 0.6; } }", lastSheet.cssRules.length);  
}
var blink = {webkitAnimationName:           'blink',
             webkitAnimationDuration:       '1s',
             webkitAnimationIterationCount: 'infinite',
             webkitAnimationTimingFunction: 'ease-in-out'};
$("#node").css(blink);