function doBlink() {
	if (document.all) {
		blink = document.getElementById('testo_lampeggiante');
    	blink.style.visibility = blink.style.visibility == "" ? "hidden" : ""
	}
}

function startBlink() {
  if (document.all)
    setInterval("doBlink()",400)
}

window.onload = startBlink;