function doBlink() 
{
//	var blink = document.all.tags("blinky")
	var blink = document.getElementsByTagName("span")
	for (var i=0; i<blink.length; i++)
		blink[i].style.visibility = blink[i].style.visibility == "" ? "hidden" : "";
}

function startBlink() 
{
	if (document.all)
	setInterval("doBlink()",500)
}

window.onload = startBlink;