<style type="text/css">
.blink {
text-decoration:blink;
}
.adasd {
color:red;
}
</style>
<span id=bl1 class="adasd">AAAA</span><br />
===========<br />
<span id=bl2>ББББ</span>
<script type="text/javascript">
function Blink(id) {
var a=document.getElementById(id);
var b=a.className.toString();
if(b.replace(/blink/g,'')!=''){
a.className=b+' '+'blink';
} else a.className='blink';
}
Blink('bl1');
Blink('bl2')
</script>