var unobtrusive_scroller = new Class({
	initialize: function() {
		this.scroller = null;
		this.y_value = 0;

		window.addEvent('load',this.prepare.bindAsEventListener(this));
	},

	prepare: function() {
		var scroller = $$('body')[0].getElementsByClassName('scroller');
		//var scroller = $$('.scroller');
		//if (console != null) console.log(scroller.length);	
		for(a=0;a<scroller.length;a++) {
			var size = scroller[a].getSize().size;
			var scrollsize = scroller[a].getSize().scrollSize;
			//if (console != null) console.log("Hello world! scrollsize = "+dumpObj(scrollsize,'scrollsize',0,2));
			var scroll_height = scrollsize.y;
			var overflow = scroll_height - size.y;
			
			if (overflow > 0) {

				var me = this;
				scroller[a].addEvent('mouseenter', function() {
					if (me.scroller != null) {
						me.scroller.stop();
					}
				});

				scroller[a].addEvent('mouseleave', function() {
					if (me.scroller != null) {
						me.scroller.options.duration = (me.y_value - this.getSize().scroll.y) * 50;
						me.scroller.scrollTo(0, me.y_value);
					}
				});

				scroller[a].innerHTML += scroller[a].innerHTML;
				this.scroll(scroller[a], scroll_height);
			}
		};
	},
	
	scroll: function(el,y) {
		this.scroller = new Fx.Scroll(el,{
			transition:Fx.Transitions.linear,
			duration:(y * 50),
			wheelStops:false,
			onComplete: function() {
				var _this = this.options._this;
				var el = this.options._el;
				var y = this.options._y;
				el.scrollTo(0,0);
				_this.scroll(el,y);
			},
			_this: this,
			_el: el,
			_y: y
		});
		this.y_value = y;
		this.scroller.scrollTo(0,y);
	}

});