/*--------------------------------------------------------------------------*
 *  
 *  SmoothScroll JavaScript Library V2
 *  
 *  MIT-style license. 
 *  
 *  2007-2011 Kazuma Nishihata 
 *  http://www.to-r.net
 *  
 *--------------------------------------------------------------------------*/
 
new function(){

var attr ="data-tor-smoothScroll";//for html5 , if you can't use html5 , this value change "class"
var attrPatt = /noSmooth/;
var d = document;//document short cut

/*
 *add Event
  -------------------------------------------------*/
function addEvent(elm,listener,fn){
try{ // IE
elm.addEventListener(listener,fn,false);
}catch(e){
elm.attachEvent(
"on"+listener
,function(){
fn.apply(elm,arguments)
}
);
}
}

/*
 *Start SmoothScroll
  -------------------------------------------------*/
function SmoothScroll(a){
if(d.getElementById(a.rel.replace(/.*\#/,""))){
var e = d.getElementById(a.rel.replace(/.*\#/,""));
}else{
return;
}

//Move point
var end=e.offsetTop
var docHeight = d.documentElement.scrollHeight;
var winHeight = window.innerHeight || d.documentElement.clientHeight
if(docHeight-winHeight<end){
var end = docHeight-winHeight;
}

//Current Point
var start=window.pageYOffset || d.documentElement.scrollTop || d.body.scrollTop || 0;


var flag=(end<start)?"up":"down";

function scrollMe(start,end,flag) {
setTimeout(
function(){
if(flag=="up" && start >= end){
start=start-(start-end)/20-1;
window.scrollTo(0,start)
scrollMe(start,end,flag);
}else if(flag=="down" && start <= end){
start=start+(end-start)/20+1;
window.scrollTo(0,start)
scrollMe(start,end,flag);
}else{
scrollTo(0,end);
}
return ;
}
,10
);

}

scrollMe(start,end,flag);

}

/*
 *Add SmoothScroll
  -------------------------------------------------*/
addEvent(window,"load",function(){
var anchors = d.getElementsByTagName("a");
for(var i = 0 ,len=anchors.length; i<len ; i++){
if(!attrPatt.test(anchors[i].getAttribute(attr)) && 
anchors[i].href.replace(/\#[a-zA-Z0-9_]+/,"") == location.href.replace(/\#[a-zA-Z0-9_]+/,"")){
anchors[i].rel = anchors[i].href;
anchors[i].href = "javascript:void(0)";
anchors[i].onclick=function(){SmoothScroll(this)}
}
}
});
}