function goTop(orix,oriy,desx,desy) {
                var Timer;
                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("goTop("+orix+","+oriy+","+desx+","+desy+")",15);
                }else{
                        clearTimeout(Timer);
                }
        }