SCRIPT / 부드러운 탑버튼

<script type="text/javascript">
function go_top(orix,oriy,desx,desy) {
    var Timer;
    if (document.body.scrollTop == 0) {
        var winHeight = document.documentElement.scrollTop;
    } else {
        var winHeight = document.body.scrollTop;
    }
    if(Timer) clearTimeout(Timer);
    startx = 0;
    starty = winHeight;
    if(!orix || orix < 0) orix = 0;
    if(!oriy || oriy < 0) oriy = 0;
    var speed = 7;
    if(!desx) desx = 0 + startx;
    if(!desy) desy = 0 + starty;
    desx += (orix - startx) / speed;
    if (desx < 0) desx = 0;
    desy += (oriy - starty) / speed;
    if (desy < 0) desy = 0;
    var posX = Math.ceil(desx);
    var posY = Math.ceil(desy);
    window.scrollTo(posX, posY);
    if((Math.floor(Math.abs(startx - orix)) < 1) && (Math.floor(Math.abs(starty - oriy)) < 1)){
        clearTimeout(Timer);
        window.scroll(orix,oriy);
    }else if(posX != orix || posY != oriy){
        Timer = setTimeout("go_top("+orix+","+oriy+","+desx+","+desy+")",15);
    }else{
        clearTimeout(Timer);
    }
}
</script>

탑버튼 링크 아래와 같이 변경해준다.

<a onclick="go_top();"> 텍스트/이미지<img src=""></a>