(function($) {
	$.tiny = $.tiny || {};
	$.tiny.scrollbar = {
		options : {
			axis : 'x',
			wheel : 40,
			scroll : true,
			size : 'auto',
			sizethumb : 100
		}
	};

	$.fn.tinyscrollbar = function(options) {
		var options = $.extend({}, $.tiny.scrollbar.options, options);
		this.each(function() {
			$(this).data('tsb', new Scrollbar($(this), options));
		});
		return this;
	};

	$.fn.tinyscrollbar_update = function(sScroll) {
		return $(this).data('tsb').update(sScroll);
	};

	function Scrollbar(root, options) {
		var oSelf = this;
		var oWrapper = root;
		var oViewport = {
			obj : $('.contentConteudos', root)
		};
		var oContent = {
			obj : $('.areaDestaques', root)
		};
		var oScrollbar = {
			obj : $('.scrollbar', root)
		};
		var oTrack = {
			obj : $('.track', oScrollbar.obj)
		};
		var oThumb = {
			obj : $('.thumb', oScrollbar.obj)
		};
		var sAxis = options.axis == 'x', sDirection = sAxis ? 'left' : 'top', sSize = sAxis ? 'Width'
				: 'Height';
		var iScroll, iPosition = {
			start : 0,
			now : 0
		}, iMouse = {};
		function initialize() {
			oSelf.update();
			setEvents();
			return oSelf;
		}
		this.update = function(sScroll) {
			oViewport[options.axis] = oViewport.obj[0]['offset' + sSize];
			oContent[options.axis] = oContent.obj[0]['scroll' + sSize];
			oContent.ratio = oViewport[options.axis] / oContent[options.axis];
			oScrollbar.obj.toggleClass('disable', oContent.ratio >= 1);
			oTrack[options.axis] = options.size == 'auto' ? oViewport[options.axis]: options.size;
			oThumb[options.axis] = Math.min(oTrack[options.axis],
							Math
									.max(
											0,
											(options.sizethumb == 'auto' ? (oTrack[options.axis] * oContent.ratio)
													: options.sizethumb)));
			oScrollbar.ratio = options.sizethumb == 'auto' ? (oContent[options.axis] / oTrack[options.axis])
					: (oContent[options.axis] - oViewport[options.axis])
							/ (oTrack[options.axis] - oThumb[options.axis]);
			iScroll = (sScroll == 'relative' && oContent.ratio <= 1) ? Math
					.min((oContent[options.axis] - oViewport[options.axis]),
							Math.max(0, iScroll)) : 0;
			iScroll = (sScroll == 'bottom' && oContent.ratio <= 1) ? (oContent[options.axis] - oViewport[options.axis])
					: isNaN(parseInt(sScroll)) ? iScroll : parseInt(sScroll);
			setSize();
		};
		function setSize() {
			oThumb.obj.css(sDirection, iScroll / oScrollbar.ratio);
			oContent.obj.css(sDirection, -iScroll);
			iMouse['start'] = oThumb.obj.offset()[sDirection];
			var sCssSize = sSize.toLowerCase();
			oScrollbar.obj.css(sCssSize, oTrack[options.axis]);
			oTrack.obj.css(sCssSize, oTrack[options.axis]);
			oThumb.obj.css(sCssSize, oThumb[options.axis]);
		}
		;
		function setEvents() {
			oThumb.obj.bind('mousedown', start);
			oThumb.obj[0].ontouchstart = function(oEvent) {
				oEvent.preventDefault();
				oThumb.obj.unbind('mousedown');
				start(oEvent.touches[0]);
				return false;
			};
			oTrack.obj.bind('mouseup', drag);
			if (options.scroll && this.addEventListener) {
				oWrapper[0].addEventListener('DOMMouseScroll', wheel, false);
				oWrapper[0].addEventListener('mousewheel', wheel, false);

			} else if (options.scroll) {
				oWrapper[0].onmousewheel = wheel;
			}
		}
		;

		function start(oEvent) {
			iMouse.start = sAxis ? oEvent.pageX : oEvent.pageY;
			var oThumbDir = parseInt(oThumb.obj.css(sDirection));
			iPosition.start = oThumbDir == 'auto' ? 0 : oThumbDir;
			$(document).bind('mousemove', drag);
			document.ontouchmove = function(oEvent) {
				$(document).unbind('mousemove');
				drag(oEvent.touches[0]);
			};
			$(document).bind('mouseup', end);
			oThumb.obj.bind('mouseup', end);
			oThumb.obj[0].ontouchend = document.ontouchend = function(oEvent) {
				$(document).unbind('mouseup');
				oThumb.obj.unbind('mouseup');
				end(oEvent.touches[0]);
			};
			return false;
		}
		;
		function wheel(oEvent) {
			if (!(oContent.ratio >= 1)) {
				oEvent = $.event.fix(oEvent || window.event);
				var iDelta = oEvent.wheelDelta ? oEvent.wheelDelta / 120
						: -oEvent.detail / 3;
				iScroll -= iDelta * options.wheel;
				iScroll = Math.min(
						(oContent[options.axis] - oViewport[options.axis]),
						Math.max(0, iScroll));
				oThumb.obj.css(sDirection, iScroll / oScrollbar.ratio);
				oContent.obj.css(sDirection, -iScroll);
				oEvent.preventDefault();
			}
			;
		}
		;
		function end(oEvent) {
			$(document).unbind('mousemove', drag);
			$(document).unbind('mouseup', end);
			oThumb.obj.unbind('mouseup', end);
			document.ontouchmove = oThumb.obj[0].ontouchend = document.ontouchend = null;
			return false;
		}
		;
		function drag(oEvent) {
			if (!(oContent.ratio >= 1)) {
				iPosition.now = Math.min(
						(oTrack[options.axis] - oThumb[options.axis]),
						Math.max(0, (iPosition.start + ((sAxis ? oEvent.pageX
								: oEvent.pageY) - iMouse.start))));
				iScroll = iPosition.now * oScrollbar.ratio;
				oContent.obj.css(sDirection, -iScroll);
				oThumb.obj.css(sDirection, iPosition.now);
				;
			}
			return false;
		}
		;
		return initialize();
	}
	;
})(jQuery);