function blink(speed) 
{
	if (speed) { if (document.all) setInterval("blink()", speed); return; }

	el = document.all.tags("blink") 
	for (i = 0; i < el.length; i++)
		el[i].style.visibility = (el[i].style.visibility == "" ? "hidden" : "");
} 

blink(2000);