Scroller = {

speed:20,

gy: function (d) {
gy = d.offsetTop
if (d.offsetParent) while (d = d.offsetParent) gy += d.offsetTop
return gy
},

scrollTop: function (){
body=document.body
d=document.documentElement
if (body && body.scrollTop) return body.scrollTop
if (d && d.scrollTop) return d.scrollTop
if (window.pageYOffset) return window.pageYOffset
return 0
},

add: function(event, body, d) {
if (event.addEventListener) return event.addEventListener(body, d,false)
if (event.attachEvent) return event.attachEvent('on'+body, d)
},

end: function(e){
if (window.event) {
window.event.cancelBubble = true
window.event.returnValue = false
return;
}
if (e.preventDefault && e.stopPropagation) {
e.preventDefault()
e.stopPropagation()
}
},

scroll: function(d){
i = window.innerHeight || document.documentElement.clientHeight;
h=document.body.scrollHeight;
a = Scroller.scrollTop()
if(d>a)
if(h-d>i)
a+=Math.ceil((d-a)/Scroller.speed)
else
a+=Math.ceil((d-a-(h-d))/Scroller.speed)
else
a = a+(d-a)/Scroller.speed;
window.scrollTo(0,a)
if(a==d || Scroller.offsetTop==a)clearInterval(Scroller.interval)
Scroller.offsetTop=a
},

init: function(obj){
Scroller.add(window,'load', Scroller.render)
},

render: function(){
a = document.getElementsByTagName('a');
Scroller.end(this);
window.onscroll
for (i=0;i