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

function startBlink() 
{
	if (document.all)
		setInterval("doBlink()",1000)
}