var blinklinkStat = "underline";
function blinklinkAct() {
    blinklinkStat = (blinklinkStat=="underline") ? "none" : "underline";
    oColl = document.getElementsByName("blinklink")
    for (var i=0; i<oColl.length; i++)
        oColl[i].style.textDecoration=blinklinkStat;
}
setInterval("blinklinkAct()",500);