function blinkIt() {
	if (!document.all) return;
	else {             
		for(i=0;i<document.all.tags('blink').length;i++){
			s=document.all.tags('blink')[i];             			 s.style.visibility=(s.style.visibility=='visible')?'hidden':'visible';
		}
	}
}

window.onload = function() {
	setInterval('blinkIt()',500);
};