var upScrollTimer;
function upScroll(toY,frms,Y) { 
 if (upScrollTimer) clearTimeout(upScrollTimer);
 if (!Y) Y = 0 + getPositionTop();
 if (!frms) frms = 6;
 if (toY > Y ) toY = 1;
 Y += (toY - getPositionTop()) / frms; 
 if (Y < 0) Y = 0;
 var posY = Math.round(Y);
 window.scrollTo(1, posY);
 if (posY != toY) {
  upScrollTimer = setTimeout("upScroll("+toY+","+frms+","+Y+")",8);
 }
}

function upTop() { 
 upScroll(0,8);
}

function getPositionTop() { 
 if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {
  return document.body.scrollTop;
 } else if (window.pageYOffset) {
  return window.pageYOffset;
 } else {
  return 0;
 }
}