function doBlink() {
    // Blink, Blink, Blink...
    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() {
    // Make sure it is IE4
    if (document.all)
        setInterval("doBlink()", 1000)
}
window.onload = startBlink;