function initPage() {
	initDropDown();
}
function initDropDown()
{
	var nav = document.getElementById("nav");
	if(nav) {
		var lis = nav.getElementsByTagName("li");
		for (var i=0; i<lis.length; i++) {
			if(lis[i].getElementsByTagName("ul").length > 0) {
				lis[i].className += " has-drop-down"
				lis[i].getElementsByTagName("a")[0].className += " has-drop-down-a"
			}
			lis[i].onmouseover = function()	{
				this.className += " hover";
			}
			lis[i].onmouseout = function() {
				this.className = this.className.replace(" hover", "");
			}
		}
	}
}
if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent && !window.opera)
	window.attachEvent("onload", initPage);

$(document).ready(function(){
	$('div.carousel').gallery({
		duration: 500,
		listOfSlides: '.frame>ul>li',
		autoRotation: 5000,
		switcher: '.switcher a'
	});
	$('div.carousel').mouseenter(function(){$(this).gallery('stop')}).mouseleave(function(){$(this).gallery('play')});
});
(function($) {
	$.fn.gallery = function(options) {
		var args = Array.prototype.slice.call(arguments);
		args.shift();
		this.each(function(){
			if(this.galControl && typeof options === 'string') {
				if(typeof this.galControl[options] === 'function') {
					this.galControl[options].apply(this.galControl, args);
				}
			} else {
				this.galControl = new Gallery(this, options);
			}
		});
		return this;
	};
	function Gallery(context, options) { this.init(context, options); };
	Gallery.prototype = {
		options:{},
		init: function (context, options){
			this.options = $.extend({
				duration: 700,
				slideElement:1,
				autoRotation: false,
				effect: false,
				listOfSlides: '.list > li',
				switcher: false,
				autoSwitcher: false,
				disableBtn: false,
				nextBtn: 'a.link-next, a.btn-next, a.next',
				prevBtn: 'a.link-prev, a.btn-prev, a.prev',
				circle: true,
				clone: false,
				direction: false,
				event: 'click',
				IE: false
			}, options || {});
			var self = this;
			this.context = $(context);
			this.els = this.context.find(this.options.listOfSlides);
			this.list = this.els.parent();
			this.count = this.els.length;
			this.autoRotation = this.options.autoRotation;
			this.duration = this.options.duration;
			if (this.options.clone) {
				this.list.append(this.els.clone());
				this.list.prepend(this.els.clone());
				this.els = this.context.find(this.options.listOfSlides);
			}
			this.wrap = this.list.parent();
			if (this.options.nextBtn) this.nextBtn = this.context.find(this.options.nextBtn);
			if (this.options.prevBtn) this.prevBtn = this.context.find(this.options.prevBtn);
			this.mas = [];
			this.sum = 0;
			this.max = this.count-1;
			this.width = 0;
			this.els.each(function(){self.mas.push(self.width);self.width +=$(this).outerWidth(true);self.sum+=$(this).outerWidth(true);});
			this.finish = this.sum-this.wrap.outerWidth();
			for (var i=0;i<this.count;i++){
				if (this.mas[i]>=this.finish) {
					this.max = i;
					break;
				}
			}
			if (this.options.autoSwitcher) {
				this.switcherHolder = this.context.find(this.options.switcher).empty();
				this.switchPattern = $('<ul class="'+ (this.options.autoSwitcher == true ? '' : this.options.autoSwitcher) +'"></ul>');
				for (var i=0;i<this.max+1;i++){
					$('<li><a href="#">'+i+'</a></li>').appendTo(this.switchPattern);
				}
				this.switchPattern.appendTo(this.switcherHolder);
				this.switcher = this.context.find(this.options.switcher).find('li');
				this.active = 0;
			} else {
				if (this.options.switcher) {
					this.switcher = this.context.find(this.options.switcher);
					this.active = this.switcher.index(this.switcher.filter('.active:eq(0)'));
				}
				else this.active = this.els.index(this.els.filter('.active:eq(0)'));
			}
			if (this.active < 0) this.active = 0;
			if (this.options.switcher) this.switcher.removeClass('active').eq(this.active).addClass('active');
			if (this.options.clone) this.active += this.count;
			
			this.list.css({marginLeft: -(this.mas[this.active])});
			
			
			if (this.options.nextBtn) this.initEvent(this, this.nextBtn,true);
			if (this.options.prevBtn) this.initEvent(this, this.prevBtn,false);
			
			this.initWindow(this,$(window));
			
			if (this.autoRotation) this.runTimer(this);
			
			if (this.options.switcher) this.initEventSwitcher(this, this.switcher);
			if (this.options.disableBtn && !this.options.circle && !this.options.clone) this.disableControls();
		},
		changeSettings: function(set,val){
			this[set] = val;
		},
		fadeElement: function(){
			this.list.eq(this.last).animate({opacity:0}, {queue:false, duration: this.duration});
			this.list.removeClass('active').eq(this.active).addClass('active').animate({
				opacity:1
			}, {queue:false, duration: this.duration, complete: function(){
				$(this).css('opacity','auto');
			}});

			if (this.options.switcher) this.switcher.removeClass('active').eq(this.active).addClass('active');
			this.last = this.active;
		},
		scrollElement: function(f){
			this.list.animate({marginLeft: f ? -this.finish : -(this.mas[this.active])}, {queue:false, duration: this.duration});
			if (this.options.switcher) this.switcher.removeClass('active').eq(this.options.clone ? this.active < this.count ? this.active : this.active >= this.count*2 ? this.active - this.count*2 : this.active - this.count : this.active).addClass('active');
		},
		runTimer: function($this){
			if($this._t) clearTimeout($this._t);
			$this._t = setInterval(function(){
				$this.nextStep();
			}, this.autoRotation);
		},
		initEventSwitcher: function($this, el){
			el.bind($this.options.event, function(){
				$this.active = $this.switcher.index($(this));
				$this.autoRotation = false;
				$this.initMove();
				return false;
			});
		},
		initEvent: function($this, addEventEl, dir){
			addEventEl.bind($this.options.event, function(){
				if (dir) $this.nextStep();
				else $this.prevStep();
				if($this._t) clearTimeout($this._t);
				if ($this.autoRotation) $this.runTimer($this);
				return false;
			});
		},
		disableControls: function(){
			this.prevBtn.removeClass(this.options.disableBtn);
			this.nextBtn.removeClass(this.options.disableBtn);
			if (this.active>=this.count-1) this.nextBtn.addClass(this.options.disableBtn);
			else this.nextBtn.removeClass(this.options.disableBtn)
			if (this.active<=0) this.prevBtn.addClass(this.options.disableBtn);
			else this.prevBtn.removeClass(this.options.disableBtn)
		},
		initMove: function(){
			var f = false;
			if (this.active >= this.max && !this.options.clone) {
				f = true;
				this.active = this.max;
			}
			if(this._t) clearTimeout(this._t);
			if (!this.options.effect) this.scrollElement(f);
			else this.fadeElement();
			if (this.autoRotation) this.runTimer(this);
			if (this.options.disableBtn && !this.options.circle && !this.options.clone) this.disableControls();
		},
		nextStep:function(){
			var f = false;
			this.active = this.active + this.options.slideElement;
			if (this.options.disableBtn && !this.options.circle && !this.options.clone) this.disableControls();
			if (this.options.clone){
				if (this.active > this.count*2) {
					this.list.css({marginLeft:-this.mas[this.count]});
					this.active = this.count+1;
				}
			} else {
				if (this.active >= this.max) {
					if (this.options.circle) {
						if (this.active > this.max) this.active = 0;
						else {
							this.active = this.max;
							f = true
						}
					}
					else {
						this.active = this.max;
						f = true;
					}
				}
			}
			if (!this.options.effect) this.scrollElement(f);
			else this.fadeElement();
		},
		prevStep: function(){
			var f = false;
			this.active = this.active - this.options.slideElement;
			if (this.options.disableBtn && !this.options.circle && !this.options.clone) this.disableControls();
			if (this.options.clone){
				if (this.active < 0) {
					this.list.css({marginLeft:-this.mas[this.count]});
					this.active = this.count-1;
				}
			} else {
				if (this.active < 0) {
					if (this.options.circle) {
						this.active = this.max;
						f = true;
					}
					else this.active = 0;
				}
			}
			if (!this.options.effect) this.scrollElement(f);
			else this.fadeElement();
		},
		initWindow: function($this,$window){
			$window.focus($.proxy(this.play,this));
			$window.blur($.proxy(this.stop,this));
		},
		stop: function(){
			if (this._t) clearTimeout(this._t);
		},
		play: function(){
			if (this._t) clearTimeout(this._t);
			if (this.autoRotation) this.runTimer(this);
		}
	}
}(jQuery));