window.onload = function() {
tinyScrolling.init();
}

var tinyScrolling = {
speed : 5,      //set here the scroll speed: when this value increase, the speed decrease. 
maxStep: 190,	 //set here the "uniform motion" step for long distances
brakeK: 8,		 //set here the coefficient of slowing down
hash:null,		
currentBlock:null,
requestedY:0,
init: function() {
var lnks = document.getElementsByTagName('a');   
for(var i = 0, lnk; lnk = lnks[i]; i++) {   
	if ((lnk.href && lnk.href.indexOf('#') != -1) &&  ( (lnk.pathname == location.pathname) ||
	('/'+lnk.pathname == location.pathname) ) && (lnk.search == location.search)) {  
	lnk.onclick = tinyScrolling.initScroll;   		
	}   
}
},
getElementYpos: function(el){
var y = 0;
while(el.offsetParent){  
	y += el.offsetTop    
	el = el.offsetParent;
}	return y;
},		
getScrollTop: function(){
if(document.all) return (document.documentElement.scrollTop) ? document.documentElement.scrollTop : document.body.scrollTop;
else return window.pageYOffset;   
},	
getWindowHeight: function(){
if (window.innerHeight)	return window.innerHeight;
if(document.documentElement && document.documentElement.clientHeight) return document.documentElement.clientHeight;
},
getDocumentHeight: function(){
if (document.height) return document.height;
if(document.body.offsetHeight) return document.body.offsetHeight;
},
initScroll: function(e){
var targ;  
if (!e) var e = window.event;
if (e.target) targ = e.target;
else if (e.srcElement) targ = e.srcElement;   
tinyScrolling.hash = targ.href.substr(targ.href.indexOf('#')+1,targ.href.length); 
tinyScrolling.currentBlock = document.getElementById(tinyScrolling.hash);   
if(!tinyScrolling.currentBlock) return;
tinyScrolling.requestedY = tinyScrolling.getElementYpos(tinyScrolling.currentBlock); 
tinyScrolling.scroll();  
return false;
},
scroll: function(){
var top  = tinyScrolling.getScrollTop();
if(tinyScrolling.requestedY > top) {  
	var endDistance = Math.round((tinyScrolling.getDocumentHeight() - (top + tinyScrolling.getWindowHeight())) / tinyScrolling.brakeK);
	endDistance = Math.min(Math.round((tinyScrolling.requestedY-top)/ tinyScrolling.brakeK), endDistance);
	var offset = Math.max(2, Math.min(endDistance, tinyScrolling.maxStep));
} else { var offset = - Math.min(Math.abs(Math.round((tinyScrolling.requestedY-top)/ tinyScrolling.brakeK)), tinyScrolling.maxStep);
} window.scrollTo(0, top + offset);  
if(Math.abs(top-tinyScrolling.requestedY) <= 1 || tinyScrolling.getScrollTop() == top) {
	window.scrollTo(0, tinyScrolling.requestedY);
	if(!document.all || window.opera) location.hash = tinyScrolling.hash;
	tinyScrolling.hash = null;
} else 	setTimeout(tinyScrolling.scroll,tinyScrolling.speed);
}		
}