function intval(v)
{
	v = parseInt(v);
	return isNaN(v) ? 0 : v;
}
function getPos(e)
{
	var l = 0;
	var t= 0;
	var w = intval(e.style.width);
	var h = intval(e.style.height);
	var wb = e.offsetWidth;
	var hb = e.offsetHeight;
	while (e.offsetParent)
	{
 		l += e.offsetLeft + (e.currentStyle?intval(e.currentStyle.borderLeftWidth):0);
		t += e.offsetTop+ (e.currentStyle?intval(e.currentStyle.borderTopWidth):0);
 		e = e.offsetParent;
 	}
 	l += e.offsetLeft + (e.currentStyle?intval(e.currentStyle.borderLeftWidth):0);
 	t+= e.offsetTop+ (e.currentStyle?intval(e.currentStyle.borderTopWidth):0);
 	return {x:l, y:t, w:w, h:h, wb:wb, hb:hb};
 }
 function getScroll()
 {
 	var t, l, w, h;
 	if (document.documentElement && document.documentElement.scrollTop)
	{
		t = document.documentElement.scrollTop;
		l = document.documentElement.scrollLeft;
		w = document.documentElement.scrollWidth;
		h = document.documentElement.scrollHeight;
	}
 	else if (document.body)
 	{
		t = document.body.scrollTop;
		l = document.body.scrollLeft;
		w = document.body.scrollWidth;
		h = document.body.scrollHeight;
	}
 	return { t: t, l: l, w: w, h: h };
 }
 function scroller(el, duration)
 {
 	var nextel = parseInt(el) + 1;
	el = document.getElementById(el);
 	if(!el) return;
	var nel = document.getElementById(nextel);
 	if(!nel) return;
 	var z = this;
	z.el = el;
	z.nel = nel;	
	z.p = getPos(el);
	z.np = getPos(nel);
	z.s = getScroll();
	z.clear = function()
	{
		window.clearInterval(z.timer);z.timer=null
	};
	z.t=(new Date).getTime();
	z.step = function()
	{
		var t = (new Date).getTime();
		var p = (t - z.t) / duration;
		if (t >= duration + z.t)
		{
			z.clear();
			window.setTimeout(function(){z.scroll(z.p.y, z.p.x, z.np.y, z.np.x)},13);
		}
		else 
		{
			st = ((-Math.cos(p*Math.PI)/2) + 0.5) * (z.p.y-z.s.t) + z.s.t;
			sl = ((-Math.cos(p*Math.PI)/2) + 0.5) * (z.p.x-z.s.l) + z.s.l;
			nst = ((-Math.cos(p*Math.PI)/2) + 0.5) * (z.np.y-z.s.t) + z.s.t;
			nsl = ((-Math.cos(p*Math.PI)/2) + 0.5) * (z.np.x-z.s.l) + z.s.l;			
			z.scroll(st, sl,nst,nsl);
		}
	};
	z.scroll = function (t, l, nt, nl){window.scrollTo(l, t);
					var mapbox=document.getElementById("mapbox");
					if(mapbox != null)
					{
						mapbox.style.left = nl + 13 + 'px';
						mapbox.style.top = nt + 'px';
					}
				};
	z.timer = window.setInterval(function(){z.step();},13);
}