/*!
* Tiny Scrollbar 1.65
* http://www.baijs.nl/tinyscrollbar/
*
* Copyright 2010, Maarten Baijs
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://www.opensource.org/licenses/mit-license.php
* http://www.opensource.org/licenses/gpl-2.0.php
*
* Date: 10 / 05 / 2011
* Depends on library: jQuery
*
*/
(function($){
	$.tiny = $.tiny || { };
	$.tiny.scrollbar = {
		options: {
			axis: 'y', // vertical or horizontal scrollbar? ( x || y ).
			wheel: 40, //how many pixels must the mouswheel scroll at a time.
			scroll: true, //enable or disable the mousewheel;
			size: 'auto', //set the size of the scrollbar to auto or a fixed number.
			sizethumb: 'auto' //set the size of the thumb to auto or a fixed number.
		}
	};
	
$.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: $('.viewport', root) };
	var oContent = { obj: $('.overview', 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);