timer = null;
    function blink(){
        var eH3 = document.getElementsByTagName('H3');
        if(eH3.length){
            for(i=0; i<eH3.length; i++){
                if(eH3[i].className == 'blink' || eH3[i].className == 'unblink'){
                    eH3[i].className = (eH3[i].className == 'blink') ? 'unblink' : 'blink';
                }
            }
        }
    }
    
    function initBlink(){
        timer = setInterval("blink()",500);
    }
    addLoadEvent(initBlink);