This snippet of code restores the <blink> tag's effect

boing
2

You can do the same without JS, but with a CSS3 animation

@-moz-keyframes blink { 0% { opacity: 1; } 50% { opacity: 1; } 50.1% { opacity: 0; } 100% { opacity: 0; } }
blink { -moz-animation: blink 1s infinite linear; }

(Warning, untested, may also wreak havoc with original blink tag).