// page init
jQuery(function(){
	initSlideshow();
	clearInputs();
	initNavFix();
	initNav();
});
// init slideshow
function initSlideshow(){
	jQuery('div.gallery').slideshow({
		autoPlay:true,
		switchTime:7000 //ms
	});
};
// clear inputs
function clearInputs(){
	clearFormFields({
		clearInputs: true,
		clearTextareas: true,
		passwordFieldText: false,
		addClassFocus: "focus",
		filterClass: "default"
	});
};
// init autoscale nav
function initNav() {
	initAutoScalingNav({
		menuId: "menu-main-menu",
		liHovering: true,
		flexible: true,
		equalLinks: false,
		sideClasses: true,
		spacing: 2
	});
};
// drop mobile
function initNavFix() {
	new touchNav({
		navBlock: 'nav'
	});
};
// clear inputs plugin
function clearFormFields(o){
	if (o.clearInputs == null) o.clearInputs = true;
	if (o.clearTextareas == null) o.clearTextareas = true;
	if (o.passwordFieldText == null) o.passwordFieldText = false;
	if (o.addClassFocus == null) o.addClassFocus = false;
	if (!o.filterClass) o.filterClass = "default";
	if(o.clearInputs) {
		var inputs = document.getElementsByTagName("input");
		for (var i = 0; i < inputs.length; i++ ) {
			if((inputs[i].type == "text" || inputs[i].type == "password") && inputs[i].className.indexOf(o.filterClass) == -1) {
				inputs[i].valueHtml = inputs[i].value;
				inputs[i].onfocus = function ()	{
					if(this.valueHtml == this.value) this.value = "";
					if(this.fake) {
						inputsSwap(this, this.previousSibling);
						this.previousSibling.focus();
					}
					if(o.addClassFocus && !this.fake) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				inputs[i].onblur = function () {
					if(this.value == "") {
						this.value = this.valueHtml;
						if(o.passwordFieldText && this.type == "password") inputsSwap(this, this.nextSibling);
					}
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
				if(o.passwordFieldText && inputs[i].type == "password") {
					var fakeInput = document.createElement("input");
					fakeInput.type = "text";
					fakeInput.value = inputs[i].value;
					fakeInput.className = inputs[i].className;
					fakeInput.fake = true;
					inputs[i].parentNode.insertBefore(fakeInput, inputs[i].nextSibling);
					inputsSwap(inputs[i], null);
				}
			}
		}
	}
	if(o.clearTextareas) {
		var textareas = document.getElementsByTagName("textarea");
		for(var i=0; i<textareas.length; i++) {
			if(textareas[i].className.indexOf(o.filterClass) == -1) {
				textareas[i].valueHtml = textareas[i].value;
				textareas[i].onfocus = function() {
					if(this.value == this.valueHtml) this.value = "";
					if(o.addClassFocus) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				textareas[i].onblur = function() {
					if(this.value == "") this.value = this.valueHtml;
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
			}
		}
	}
	function inputsSwap(el, el2) {
		if(el) el.style.display = "none";
		if(el2) el2.style.display = "inline";
	}
};
// autoscale menu plugin
function initAutoScalingNav(o) {
	if (!o.menuId) o.menuId = "menu-main-menu";
	if (!o.tag) o.tag = "a";
	if (!o.spacing) o.spacing = 0;
	if (!o.constant) o.constant = 0;
	if (!o.minPaddings) o.minPaddings = 0;
	if (!o.liHovering) o.liHovering = false;
	if (!o.sideClasses) o.sideClasses = false;
	if (!o.equalLinks) o.equalLinks = false;
	if (!o.flexible) o.flexible = false;
	var nav = document.getElementById(o.menuId);
	if(nav) {
		nav.className += " scaling-active";
		var lis = nav.getElementsByTagName("li");
		var asFl = [];
		var lisFl = [];
		var width = 0;
		for (var i=0, j=0; i<lis.length; i++) {
			if(lis[i].parentNode == nav) {
				var t = lis[i].getElementsByTagName(o.tag).item(0);
				asFl.push(t);
				asFl[j++].width = t.offsetWidth;
				lisFl.push(lis[i]);
				if(width < t.offsetWidth) width = t.offsetWidth;
			}
			if(o.liHovering) {
				lis[i].onmouseover = function() {
					this.className += " hover";
				}
				lis[i].onmouseout = function() {
					this.className = this.className.replace("hover", "");
				}
			}
		}
		var menuWidth = nav.clientWidth - asFl.length*o.spacing - o.constant;
		if(o.equalLinks && width * asFl.length < menuWidth) {
			for (var i=0; i<asFl.length; i++) {
				asFl[i].width = width;
			}
		}
		width = getItemsWidth(asFl);
		if(width < menuWidth) {
			var version = navigator.userAgent.toLowerCase();
			for (var i=0; getItemsWidth(asFl) < menuWidth; i++) {
				asFl[i].width++;
				if(!o.flexible) {
					asFl[i].style.width = asFl[i].width + "px";
				}
				if(i >= asFl.length-1) i=-1;
			}
			if(o.flexible) {
				for (var i=0; i<asFl.length; i++) {
					width = (asFl[i].width - o.spacing - o.constant/asFl.length)/menuWidth*100;
					if(i != asFl.length-1) {
						lisFl[i].style.width = width + "%";
					}
					else {
						if(navigator.appName.indexOf("Microsoft Internet Explorer") == -1 || version.indexOf("msie 8") != -1 || version.indexOf("msie 9") != -1)
							lisFl[i].style.width = width + "%";
					}
				}
			}
		}
		else if(o.minPaddings > 0) {
			for (var i=0; i<asFl.length; i++) {
				asFl[i].style.paddingLeft = o.minPaddings + "px";
				asFl[i].style.paddingRight = o.minPaddings + "px";
			}
		}
		if(o.sideClasses) {
			lisFl[0].className += " first-child";
			lisFl[0].getElementsByTagName(o.tag).item(0).className += " first-child-a";
			lisFl[lisFl.length-1].className += " last-child";
			lisFl[lisFl.length-1].getElementsByTagName(o.tag).item(0).className += " last-child-a";
		}
		nav.className += " scaling-ready";
	}
	function getItemsWidth(a) {
		var w = 0;
		for(var q=0; q<a.length; q++) {
			w += a[q].width;
		}
		return w;
	}
};

//create jQuery plugin
jQuery.fn.slideshow = function(options){return new slideshow(this, options);}

//constructor
function slideshow(obj, options){this.init(obj,options)}

//prototype
slideshow.prototype = {
	init:function(obj, options) {
		this.options = jQuery.extend({
			slides:'div.frame >ul >li',
			nextBtn:'a.link-next',
			prevBtn:'a.link-prev',
			pagingHolder:'ul.switcher',
			pagingTag:'li',
			createPaging:false,
			autoPlay:false,
			autoHeight:false,
			dynamicLoad:false,
			imgAttr:'alt',
			effect:'fade',//fade, slideX, slideY,
			startSlide:false,
			switchTime:5000,
			animSpeed:700
		},options);
		
		this.mainHolder = jQuery(obj);
		this.slides = jQuery(this.options.slides,this.mainHolder);		
		this.nextBtn = jQuery(this.options.nextBtn,this.mainHolder);
		this.prevBtn = jQuery(this.options.prevBtn,this.mainHolder);
		this.dynamicLoad = this.options.dynamicLoad;
		this.imgAttr = this.options.imgAttr;
		this.animSpeed = this.options.animSpeed;
		this.switchTime = this.options.switchTime;
		this.effect = this.options.effect;
		this.autoPlay = this.options.autoPlay;
		this.autoHeight = this.options.autoHeight;
		this.previous = -1;
		this.loadingFrame = 1;
		this.busy = false;
		this.direction = 1;
		this.timer;
		this.pagingArray = new Array;
		this.loadArray = new Array;
		this.preloader = new Array;
		this.slidesParent = this.slides.eq(0).parent();
		this.slideW = this.slidesParent.width();
		this.slideH = this.slidesParent.height();
		
		(function(){
			if (this.options.startSlide) this.current = this.options.startSlide
			else {
				var active = -1;
				for(var i = 0; i< this.slides.length-1; i++) {
					if (this.slides.eq(i).hasClass('active')) {
						active = i;
						break;						
					}
				}
				if (active != -1) this.current = active;
				else this.current = 0;
			}
		}).apply(this);
		
		this.initPaging();
		this.setStyles();
		this.bindEvents();
		this.showSlide();
	},
	
	initPaging:function(){
		var obj = this;
		this.pagingHolder = jQuery(this.options.pagingHolder,this.mainHolder);
		
		if (this.options.createPaging) {
			this.pagingHolder.each(function(i){
				var _this = jQuery(this);
				_this.empty();
				var list = jQuery('<ul>');
				for (var i = 0; i < obj.slides.length; i++) jQuery('<li><a href="#">' + (i + 1) + '</a></li>').appendTo(list);
				_this.append(list);
			});
		}
		
		this.paging = jQuery(this.options.pagingTag, this.pagingHolder);
		var ratio = Math.ceil(this.paging.length / this.slides.length);
		for (var i = 0; i < ratio; i++) {
			this.pagingArray.push(this.paging.slice(i*this.slides.length, (i*this.slides.length)+this.slides.length));
		}
	},
	
	setStyles:function(){
		//loader
		if (this.dynamicLoad) {
			this.loader = jQuery('<div class="loader">');
			this.loaderDiv = jQuery('<div>').appendTo(this.loader)
			this.loader.append(this.loaderDiv).appendTo(this.slidesParent);
		}
		// auto height
		if (this.autoHeight) {
			this.slides.eq(this.current).parent().css({height:this.slides.eq(this.current).outerHeight(true)});
		}
		//slides
		if (this.effect == 'fade') {
			this.slides.css({display:'none'});
			this.slides.eq(this.current).css({display:'block'});
		} else if (this.effect == 'slideX'){
			this.slides.css({display: 'none',left:-this.slideW});
			this.slides.eq(this.current).css({display:'block',left:0});
		} else if (this.effect == 'slideY'){
			this.slides.css({display:'none',top:-this.slideH});
			this.slides.eq(this.current).css({display:'block',top:0});
		}
	},
	
	bindEvents:function(){
		var obj = this;
		this.nextBtn.bind('click',function(){
			if (!obj.busy) obj.nextSlide();
			return false;
		});
		
		this.prevBtn.bind('click',function(){
			if (!obj.busy) obj.prevSlide();
			return false;
		});
		
		for (var i = 0; i < this.pagingArray.length; i++) {
			this.pagingArray[i].each(function(i){
				jQuery(this).bind('click',function(){
					if (i != obj.current && !obj.busy) {
						obj.previous = obj.current;
						obj.current = i;
						if (obj.previous > i) obj.direction = -1
						else obj.direction = 1;
						obj.showSlide();
					}
					return false;
				});
			});
		}
		
		if (this.dynamicLoad) this.loader.bind('click',function(){
			obj.abortLoading();
		});
	},
	
	nextSlide:function(){
		this.previous = this.current;
		if (this.current < this.slides.length-1) this.current++
		else this.current = 0;
		this.direction = 1;
		this.showSlide();
	},
	
	prevSlide:function(){
		this.previous = this.current;
		if (this.current > 0) this.current--
		else this.current = this.slides.length-1;
		this.direction = -1;
		this.showSlide();
	},
	
	showSlide:function(){
		var obj = this;
		var _current = this.current;
		this.busy = true;
		clearTimeout(this.timer);
		
		if (typeof this.loadArray[_current] != 'undefined' || !this.dynamicLoad) {
			//slide already loaded
			this.switchSlide();
		
		} else {
			//slide not loaded
			this.showLoading();
			var images = jQuery(this.dynamicLoad,this.slides.eq(this.current));
			if (images.length) {
				var counter = 0;
				images.each(function(){
					var preloader = new Image;
					obj.preloader.push(preloader);
					var img = jQuery(this);
					preloader.onload = function(){
						counter++;
						checkImages();
					}
					preloader.onerror = function(){
						//ignore errors
						counter++;
						checkImages();
					}
					preloader.src = img.attr(obj.imgAttr);
				});
				
				function checkImages(){
					if (counter == images.length) {
						images.each(function(){
							var img = jQuery(this);
							img.attr('src',img.attr(obj.imgAttr));
						});
						successLoad();
					}
				}
				
			} else successLoad();
		}
		
		function successLoad(){
			obj.loadArray[_current] = 1;
			obj.hideLoading();
			obj.switchSlide();
		}
	},
	
	switchSlide:function(){
		var obj = this;
		
		if (this.previous != -1) {
			var nextSlide = this.slides.eq(this.current);
			var prevSlide = this.slides.eq(this.previous);
			
			if (this.autoHeight) this.slides.eq(this.current).parent().stop().animate({height:this.slides.eq(this.current).outerHeight(true)},this.animSpeed);
			if (this.effect == 'fade') {
				nextSlide.stop().css({display:'block',opacity:0}).animate({opacity:1},this.animSpeed,function(){
					jQuery(this).css({opacity:'auto'});
				});
				prevSlide.stop().animate({opacity:0},this.animSpeed,callback);
			} else if (this.effect == 'slideX'){
				nextSlide.stop().css({display:'block',left:this.slideW*this.direction}).animate({left:0},this.animSpeed);
				prevSlide.stop().animate({left:-this.slideW*this.direction},this.animSpeed+10,callback);
			} else if (this.effect == 'slideY'){
				nextSlide.stop().css({display:'block',top:this.slideH*this.direction}).animate({top:0},this.animSpeed);
				prevSlide.stop().animate({top:-this.slideH*this.direction},this.animSpeed+10,callback);
			}
		} else {
			if (this.autoPlay) this.startAutoPlay();
			this.busy = false;
		}
		
		this.refreshStatus();
		
		function callback(){
			prevSlide.css({display:'none'});
			if (obj.autoPlay) obj.startAutoPlay();
			obj.busy = false;
		}
	},
	
	refreshStatus:function(){
		for (var i = 0; i < this.pagingArray.length;i++) {
			this.pagingArray[i].eq(this.previous).removeClass('active');
			this.pagingArray[i].eq(this.current).addClass('active');
		}
		this.slides.eq(this.previous).removeClass('active');
		this.slides.eq(this.current).addClass('active');
	},
	
	showLoading:function(){
		var obj = this;
		this.loader.show();
		clearInterval(this.loadingTimer);
		obj.loadingTimer = setInterval(animateLoading, 66);
		
		function animateLoading(){
			obj.loaderDiv.css('top', obj.loadingFrame * -40);
			obj.loadingFrame = (obj.loadingFrame + 1) % 12;
		}
	},
	
	hideLoading:function(){
		this.loader.hide();
		clearInterval(this.loadingTimer);
	},
	
	abortLoading:function(){
		this.busy = false;
		this.hideLoading();
		this.current = this.previous;
		for (var i = 0; i < this.preloader.length; i++) {
			this.preloader[i].onload = null;
			this.preloader[i].onerror = null;
		}
		if (this.autoPlay) this.startAutoPlay();
	},
	
	startAutoPlay:function(){
		var obj = this;
		clearTimeout(obj.timer);
		obj.timer = setTimeout(function(){
			obj.nextSlide();
		},obj.switchTime);
	}
};

// navigation accesibility module
function touchNav(options) {
	this.options = {
		mobileReg: /(ipad|iphone|ipod|android|blackberry|iemobile)/gi,
		hoverClass: 'hover',
		followLink: false,
		menuItems: 'li',
		menuOpener: 'a',
		menuDrop: 'div',
		navBlock: null
	}
	for(var p in options) {
		this.options[p] = options[p];
	}
	this.init();
}
touchNav.prototype = {
	init: function() {
		this.isMobile = (this.options.mobileReg).test(navigator.userAgent);
		if(typeof this.options.navBlock === 'string') {
			this.menu = document.getElementById(this.options.navBlock);
		} else if(typeof this.options.navBlock === 'object') {
			this.menu = this.options.navBlock;
		}
		if(this.menu) {
			this.getElements();
			this.addEvents();
		}
	},
	getElements: function() {
		this.menuItems = this.menu.getElementsByTagName(this.options.menuItems);
	},
	hideActiveDropdown: function() {
		if(this.activeParent) {
			for(var i = 0; i < this.menuItems.length; i++) {
				this.removeClass(this.menuItems[i], this.options.hoverClass);
			}
			this.activeParent = null;
		}
	},
	getOpener: function(obj) {
		for(var i = 0; i < obj.childNodes.length; i++) {
			if(obj.childNodes[i].tagName && obj.childNodes[i].tagName.toLowerCase() == this.options.menuOpener.toLowerCase()) {
				return obj.childNodes[i];
			}
		}
		return false;
	},
	getDrop: function(obj) {
		for(var i = 0; i < obj.childNodes.length; i++) {
			if(obj.childNodes[i].tagName && obj.childNodes[i].tagName.toLowerCase() == this.options.menuDrop.toLowerCase()) {
				return obj.childNodes[i];
			}
		}
		return false;
	},
	addEvents: function() {
		// mobile event handlers
		if(this.isMobile) {
			for(var i = 0; i < this.menuItems.length; i++) {
				this.menuItems[i].touchNav = this;
				if(this.getDrop(this.menuItems[i])) {
					this.addHandler(this.getOpener(this.menuItems[i]), 'click', this.bind(this.clickHandler,this.menuItems[i]));
				}
			}
			this.addHandler(document.body, 'click', this.bind(this.outsideHandler, this));
			this.addHandler(document.body, 'touchstart', this.bind(this.outsideHandler, this));
		}
		// desktop event handlers
		else {
			for(var i = 0; i < this.menuItems.length; i++) {
				this.menuItems[i].touchNav = this;
				this.addHandler(this.menuItems[i], 'mouseover', this.mouseoverHandler);
				this.addHandler(this.menuItems[i], 'mouseout', this.mouseoutHandler);
			}
		}
	},
	outsideHandler: function(e) {
		var childFlag = false;
		if(this.activeParent) {
			this.outsideTarget = e.target || e.currentTarget || e.srcElement;
			while (this.outsideTarget.parentNode) {
				if(this.activeParent == this.outsideTarget) {
					childFlag = true;
					break;
				}
				this.outsideTarget = this.outsideTarget.parentNode;
			}
			if(!childFlag) {
				this.hideActiveDropdown();
			}
		}
	},
	mouseoverHandler: function() {
		this.touchNav.addClass(this, this.touchNav.options.hoverClass);
	},
	mouseoutHandler: function() {
		this.touchNav.removeClass(this, this.touchNav.options.hoverClass);
	},
	clickHandler: function(e) {
		// get current dropdown
		var tNav = this.touchNav;
		tNav.currentElement = e.currentTarget || e.srcElement;
		tNav.currentParent = tNav.currentElement.parentNode;

		// hide previous drop (if exists)
		if(tNav.activeParent && !tNav.isParent(tNav.activeParent, tNav.currentParent) && tNav.currentParent != tNav.activeParent) {
			tNav.hideActiveDropdown();
		}

		// handle current drop
		if(tNav.hasClass(tNav.currentParent, tNav.options.hoverClass)) {
			tNav.removeClass(tNav.currentParent, tNav.options.hoverClass);
			if(tNav.options.followLink) {
				window.location.href = tNav.currentElement.href;
			}
		} else {
			tNav.addClass(tNav.currentParent, tNav.options.hoverClass);
			tNav.activeParent = tNav.currentParent;
			return tNav.preventEvent(e);
		}
	},
	preventEvent: function(e) {
		if(!e) e = window.event;
		if(e.preventDefault) e.preventDefault();
		if(e.stopPropagation) e.stopPropagation();
		e.cancelBubble = true;
		return false;
	},
	isParent: function(parent, child) {
		while(child.parentNode) {
			if(child.parentNode == parent) {
				return true;
			}
			child = child.parentNode;
		}
		return false;
	},
	addHandler: function(object, event, handler) {
		if (typeof object.addEventListener != 'undefined') object.addEventListener(event, this.bind(handler,object), false);
		else if (typeof object.attachEvent != 'undefined') object.attachEvent('on' + event, this.bind(handler,object));
	},
	removeHandler: function(object, event, handler) {
		if (typeof object.removeEventListener != 'undefined') object.removeEventListener(event, handler, false);
		else if (typeof object.detachEvent != 'undefined') object.detachEvent('on' + event, handler);
	},
	hasClass: function(obj,cname) {
		return (obj.className ? obj.className.match(new RegExp('(\\s|^)'+cname+'(\\s|$)')) : false);
	},
	addClass: function(obj,cname) {
		if (!this.hasClass(obj,cname)) obj.className += " "+cname;
	},
	removeClass: function(obj,cname) {
		if (this.hasClass(obj,cname)) obj.className=obj.className.replace(new RegExp('(\\s|^)'+cname+'(\\s|$)'),' ');
	},
	bind: function(func, scope){
		return function() {
			return func.apply(scope, arguments);
		}
	}
};

// mobile browsers detect
browserPlatform = {
	platforms: [
		{
			// Blackberry <5
			uaString:['BlackBerry','midp'],
			cssFile:'blackberry.css'
		},
		{
			// Symbian phones
			uaString:['symbian','midp'],
			cssFile:'symbian.css'
		},
		{
			// Opera Mobile
			uaString:['opera','mobi'],
			cssFile:'opera.css'
		},
		{
			// IE Mobile <6
			uaString:['msie','ppc'],
			cssFile:'ieppc.css'
		},
		{
			// IE Mobile 6+
			uaString:'iemobile',
			cssFile:'iemobile.css'
		},
		{
			// Palm WebOS
			uaString:'webos',
			cssFile:'webos.css'
		},
		{
			// Android
			uaString:'Android',
			cssFile:'android.css'
		},
		{
			// Blackberry 6+
			uaString:['BlackBerry','6.0','mobi'],
			cssFile:'blackberry6.0.css'
		},
		{
			// iPad
			uaString:'ipad',
			cssFile:'ipad.css',
			miscHead:''
		},
		{
			// iPhone and other webkit browsers
			uaString:['safari','mobi'],
			cssFile:'safari.css',
			miscHead:''
		}
	],
	options: {
		cssPath:'css/',
		mobileCSS:'allmobile.css'
	},
	init:function(){
		this.checkMobile();
		this.parsePlatforms();
		return this;
	},
	checkMobile: function() {
		if(this.uaMatch('mobi') || this.uaMatch('midp') || this.uaMatch('ppc') || this.uaMatch('webos')) {
			this.attachStyles({cssFile:this.options.mobileCSS});
		}
	},
	parsePlatforms: function() {
		for(var i = 0; i < this.platforms.length; i++) {
			if(typeof this.platforms[i].uaString === 'string') {
				if(this.uaMatch(this.platforms[i].uaString)) {
					this.attachStyles(this.platforms[i]);
					break;
				}
			} else {
				for(var j = 0, allMatch = true; j < this.platforms[i].uaString.length; j++) {
					if(!this.uaMatch(this.platforms[i].uaString[j])) {
						allMatch = false;
					}
				}
				if(allMatch) {
					this.attachStyles(this.platforms[i]);
					break;
				}
			}
		}
	},
	attachStyles: function(platform) {
		if(platform.cssFile) {
			document.write('<link rel="stylesheet" href="' + this.options.cssPath + platform.cssFile + '" type="text/css"/>');
		}
		if(platform.miscHead) {
			document.write(platform.miscHead);
		}
	},
	uaMatch:function(str) {
		if(!this.ua) {
			this.ua = navigator.userAgent.toLowerCase();
		}
		return this.ua.indexOf(str.toLowerCase()) != -1;
	}
}.init();
// browser detect script
browserDetect = {
	matchGroups: [
		[
			{uaString:'win', className:'win'},
			{uaString:'mac', className:'mac'},
			{uaString:['linux','x11'], className:'linux'}
		],
		[
			{uaString:'msie', className:'trident'},
			{uaString:'applewebkit', className:'webkit'},
			{uaString:'gecko', className:'gecko'},
			{uaString:'opera', className:'presto'}
		],
		[
			{uaString:'msie 9.0', className:'ie9'},
			{uaString:'msie 8.0', className:'ie8'},
			{uaString:'msie 7.0', className:'ie7'},
			{uaString:'msie 6.0', className:'ie6'},
			{uaString:'firefox/2', className:'ff2'},
			{uaString:'firefox/3', className:'ff3'},
			{uaString:'firefox/4', className:'ff4'},
			{uaString:['opera','version/11'], className:'opera11'},
			{uaString:['opera','version/10'], className:'opera10'},
			{uaString:'opera/9', className:'opera9'},
			{uaString:['safari','version/3'], className:'safari3'},
			{uaString:['safari','version/4'], className:'safari4'},
			{uaString:['safari','version/5'], className:'safari5'},
			{uaString:'chrome', className:'chrome'},
			{uaString:'safari', className:'safari2'},
			{uaString:'unknown', className:'unknown'}
		]
	],
	init: function() {
		this.detect();
		return this;
	},
	addClass: function(className) {
		this.pageHolder = document.documentElement;
		document.documentElement.className += ' '+className;
	},
	detect: function() {
		for(var i = 0, curGroup; i < this.matchGroups.length; i++) {
			curGroup = this.matchGroups[i];
			for(var j = 0, curItem; j < curGroup.length; j++) {
				curItem = curGroup[j];
				if(typeof curItem.uaString === 'string') {
					if(this.uaMatch(curItem.uaString)) {
						this.addClass(curItem.className);
						break;
					}
				} else {
					for(var k = 0, allMatch = true; k < curItem.uaString.length; k++) {
						if(!this.uaMatch(curItem.uaString[k])) {
							allMatch = false;
							break;
						}
					}
					if(allMatch) {
						this.addClass(curItem.className);
						break;
					}
				}
			}
		}
	},
	uaMatch: function(s) {
		if(!this.ua) {
			this.ua = navigator.userAgent.toLowerCase();
		}
		return this.ua.indexOf(s) != -1;
	}
}.init();