jquery - Slow scroll speed down

Question

Ok, so I can't find anything about this.

I know it is horrible to change the scroll speed of a site, but I need to do this for a site which is more a game than a site.

Can someone tell me how to slow down de scrollspeed? Jquery or css?

EDIT: I want to change the scrollspeed whem people scroll with the mouse wheel.

Answer 1

Look this fiddle: http://jsfiddle.net/promatik/NFk2L/ , you can set time and distance!

JS code

if (window.addEventListener) window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;

function wheel(event) {
    var delta = 0;
    if (event.wheelDelta) delta = event.wheelDelta / 120;
    else if (event.detail) delta = -event.detail / 3;

    handle(delta);
    if (event.preventDefault) event.preventDefault();
    event.returnValue = false;
}

function handle(delta) {
    var time = 1000;
    var distance = 300;

    $('html, body').stop().animate({
        scrollTop: $(window).scrollTop() - (distance * delta)
    }, time );
}

if (window.addEventListener) window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;

function wheel(event) {
  var delta = 0;
  if (event.wheelDelta) delta = event.wheelDelta / 120;
  else if (event.detail) delta = -event.detail / 3;

  handle(delta);
  if (event.preventDefault) event.preventDefault();
  event.returnValue = false;
}

function handle(delta) {
  var time = 1000;
  var distance = 300;

  $('html, body').stop().animate({
    scrollTop: $(window).scrollTop() - (distance * delta)
  }, time);
}

#myDiv {
  height: 800px;
  width: 100px;
  background-color: #CCF;
  font-family: 'Trebuchet MS';
  font-size: 12px;
  line-height: 24px;
  padding: 5px;
  margin: 5px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="myDiv">
  Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor
  in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</div>