<blink>Hello</blink>
<blink>World</blink>
<script>
var doBlink = function() {
this.style.visibility = this.style.visibility
== "hidden" ? "": "hidden";
}
var blinks = document.querySelectorAll('blink');
for (var i = 0; i < blinks.length; i++) {
setInterval(doBlink.bind(blinks[i]), 1000);
}
</script> blink { display: none !important; }