// page init
jQuery(document).ready(function(){
	jQuery('div.home-gallery').gallery({
		duration: 500,
		autoRotation: 5000,
		listOfSlides: '.rotator-wide > li',
		effect:true,
		switcher: '.switcher>li'
	});
	jQuery('div.slide-holder').each(function(){
		jQuery(this).gallery({
			duration: 500,
			slideElement: 10,
			listOfSlides: '.slider > li'
		});
	});
	jQuery('.photo-box').each(function(){
		jQuery(this).gallery({
			duration: 500,
			listOfSlides: '.rotator > li',
			effect:true,
			nextBtn: 'a.none',
			prevBtn: 'a.none',
			switcher:'.slider>li'
		});
	});
	jQuery('.media-gallery').gallery({
		duration: 500,
		listOfSlides: '.video-holder .item',
		effect:true,
		switcher:'.video-preview>li',
		simple:true
	});
	jQuery('.video-preview > li').click(function() {
		jQuery('.video-holder .item:not(.active) iframe').each(function() {
			this.src = this.src;
		});
	});
	jQuery('.photo-gallery').gallery({
		duration: 500,
		listOfSlides: '.photo-box',
		effect:true,
		nextBtn: 'a.none',
		prevBtn: 'a.none',
		switcher:'.preview>li',
		simple:true
	});
	
	ajaxTabs();
	//ajaxTabsPrevNext();
});
jQuery(window).load(function(){
	initRoundAbout();
	initTourGallery();
});

// ajax content loaded callback
function onAjaxContentLoaded(obj) {
	// content pager init
	obj.each(function(){
		var hold = jQuery(this);
		var btnNext = hold.find('.buttons span.next a');
		var btnPrev = hold.find('.buttons span.prev a');
		
		function loadContent() {
			jQuery.ajax({
				url: this.href,
				data: 'ajax=1',
				method: 'post',
				dataType:'text',
				success: function(msg) {
					hold.html(msg);
					var htmlHolder = hold.find('.tab-content');
					hold.html(htmlHolder.html());
					onAjaxContentLoaded(hold);
					return false;
				},
				error: function() {
					alert('AJAX Error!');
				}
			})
			return false;
		}
		
		btnPrev.click(loadContent);
		btnNext.click(loadContent);
	});
}

// tour page gallery
function initTourGallery(){
	jQuery('#roundabout').roundabout({
		minScale: 0.4,
		maxScale: 1,
		btnNext: '#next',
		minOpacity: 'none',
		maxOpacity: 'none',
		btnPrev: '#previous',
		clickToFocus: false,
		duration: 600
	});
	
	jQuery('.studio-img > li > a').each(function(ind){
		jQuery(this).click(function(){
			if(jQuery('#roundabout').length){
				jQuery('#roundabout').roundabout_animateToChild(ind, 500); 
				return false;
			}
		});
	});
	
	var description = jQuery('#description');
	if(description.length){
		description.html(jQuery('#roundabout li').eq(0).find('img').eq(0).attr('alt'))
		jQuery('#roundabout li').focus(function(){
			var text = jQuery(this).find('img').eq(0).attr('alt');
			description.html('').html(text);
		});
	}
}

// instructors roundabout init
function initRoundAbout() {
	var activeClass = 'active';
	jQuery('.long-tabs').each(function(){
		// init roundabout gallery
		var mess = jQuery(this);
		jQuery('.roundaboutGallery', mess).roundabout({
			minScale: 0.4,
			maxScale: 1,
			minOpacity: 'none',
			maxOpacity: 'none',
			duration: 500
		});
		
		// pager togglers
		var roundaboutGalleryList = jQuery('.roundaboutGallery li', mess);
		roundaboutGalleryList.each(function(ind){
			var item = jQuery(this);
			item.attr('rel',item.attr('title')).removeAttr('title');
		});
		
		var infoBoxes = jQuery('.infoArea .infoBox', mess).hide();
		var index = 0;
		infoBoxes.eq(index).show();
		roundaboutGalleryList.focus(function(){
			var curItem = jQuery(this);
			index = roundaboutGalleryList.index(curItem);
			infoBoxes.hide().filter('[id="'+curItem.attr('rel')+'"]').show();
			tabLinks.removeClass(activeClass).filter('[rel="'+curItem.attr('rel')+'"]').addClass(activeClass);
		});
		
		// tablinks
		var tabLinks = mess.find('.tabset a.tab');
		tabLinks.click(function(){
			var curLink = jQuery(this);
			roundaboutGalleryList.filter('[rel="'+curLink.attr('rel')+'"]').trigger('click');
			return false;
		});
	});
}

function ajaxTabsPrevNext(){
	jQuery('.tabs-area').each(function(){
		var holder = jQuery(this);
		var buttons = jQuery('.buttons', holder);
		var links = jQuery('.tabset a.tab', holder);
		
		buttons.each(function(){
			var btnHolder = jQuery(this);
			var next = jQuery('.next', btnHolder);
			var prev = jQuery('.prev', btnHolder);
			
			next.click(function(){
				var activeLink = links.index(links.filter('.active').eq(0));
				if(activeLink < links.length - 1) activeLink = activeLink + 1;
				else activeLink = 0;
				jQuery(window).trigger('newTab', links.eq(activeLink));
				return false;
			});
			
			prev.click(function(){
				var activeLink = links.index(links.filter('.active').eq(0));
				if(activeLink < links.length + 1) activeLink = activeLink - 1;
				else activeLink = 0;
				jQuery(window).trigger('newTab', links.eq(activeLink));
				return false;
			});
		});
	});
}


function ajaxTabs() {
	var _tabset = jQuery('.tabset:not(.skip)');
	var _hash = window.location.hash;
	
	_tabset.each(function(){
		var _tabsetEl = jQuery(this).find('a.tab'),
			_hold = _tabset.parent();
		
		_tabsetEl.click(function(){
			clickLink(jQuery(this));
			return false;
		});
		
		jQuery(window).bind('newTab',function(e, link){
			clickLink(jQuery(link));
		});
		
		/* hash change handling */
		var oldHash = window.location.hash;
		setInterval(function(){
			if(window.location.hash != oldHash) {
				oldHash = window.location.hash;
				jQuery('html,body').stop().animate({scrollTop:0},{duration:0});
				_hash = window.location.hash.substring(1);
				_tabsetEl.filter('[href="'+_hash+'"]').trigger('click');
			}
		},150);
		
		function clickLink(_link){
			if (!_link.hasClass('active')) {
				_tabsetEl.removeClass('active');
				_link.addClass('active');
				var _url = _link.attr('href'),
					_tabs = _hold.children('div.tab-content');
				_tabs.hide();
				var _tab = jQuery('div[rel="'+ _url +'"]');
				if (_tab.length) {
					_tab.show();
				}
				else {
					loadAjax(_url);
				}
			}
			
		}

		if(_hash.length > 1) {
			_hash = _hash.substring(1);
			_tabsetEl.filter('[href="'+_hash+'"]').trigger('click');
		} else {
			_tabsetEl.each(function(){
				if (jQuery(this).hasClass('active'))
				loadAjax(jQuery(this).attr('href'));
			});
		}

		function loadAjax(_url) {
			jQuery.ajax({
				type: 'post',
				data: 'ajax=1',
				url: _url,
				dataType: 'text',
				success: function(msg){
					var mess = jQuery(msg);
					mess.attr('rel',_url)
					_hold.append(mess);
					if(typeof onAjaxContentLoaded === 'function') {
						onAjaxContentLoaded(mess);
					}
				}
			});
		}
	});
}
(function($) {
	jQuery.fn.gallery = function(options) { return new Gallery(this.get(0), options); };
	
	function Gallery(context, options) { this.init(context, options); };
	
	Gallery.prototype = {
		options:{},
		init: function (context, options){
			this.options = jQuery.extend({
				duration: 700,
				slideElement: 1,
				autoRotation: false,
				effect: false,
				simple:false,
				listOfSlides: 'ul > li',
				switcher: false,
				disableBtn: false,
				nextBtn: 'a.link-next, a.btn-next, a.next',
				prevBtn: 'a.link-prev, a.btn-prev, a.prev',
				circle: true,
				direction: false,
				event: 'click',
				IE: false
			}, options || {});
			var _el = jQuery(context).find(this.options.listOfSlides);
			if (this.options.effect) this.list = _el;
			else this.list = _el.parent();
			if (this.options.switcher) this.switcher = jQuery(context).find(this.options.switcher);
			this.nextBtn = jQuery(context).find(this.options.nextBtn);
			this.prevBtn = jQuery(context).find(this.options.prevBtn);
			this.count = _el.index(_el.filter(':last'));
			
			if (this.options.switcher) this.active = this.switcher.index(this.switcher.filter('.active:eq(0)'));
			else this.active = _el.index(_el.filter('.active:eq(0)'));
			if (this.active < 0) this.active = 0;
			this.last = this.active;
			
			this.woh = _el.outerWidth(true);
			if (!this.options.direction) this.installDirections(this.list.parent().width());
			else {
				this.woh = _el.outerHeight(true);
				this.installDirections(this.list.parent().height());
			}
			
			if (!this.options.effect) {
				this.rew = this.count - this.wrapHolderW + 1;
				if (!this.options.direction) this.list.css({marginLeft: -(this.woh * this.active)});
				else this.list.css({marginTop: -(this.woh * this.active)});
			}
			else {
				this.rew = this.count;
				if (this.options.simple) this.list.removeClass('active').hide().eq(this.active).addClass('active').show();
				else this.list.css({opacity: 0}).removeClass('active').eq(this.active).addClass('active').css({opacity: 1}).css('opacity', 'auto');
				if (this.options.switcher) this.switcher.removeClass('active').eq(this.active).addClass('active');
			}
			
			if (this.options.disableBtn) {
				if (this.count < this.wrapHolderW) this.nextBtn.addClass(this.options.disableBtn);
				if (this.active == 0) this.prevBtn.addClass(this.options.disableBtn);
			}
			
			this.initEvent(this, this.nextBtn, this.prevBtn, true);
			this.initEvent(this, this.prevBtn, this.nextBtn, false);
			
			if (this.options.autoRotation) this.runTimer(this);
			
			if (this.options.switcher) this.initEventSwitcher(this, this.switcher);
		},
		installDirections: function(temp){
			this.wrapHolderW = Math.floor(temp / this.woh);
			if (((this.wrapHolderW - 1) * this.woh + this.woh / 2) > temp) this.wrapHolderWwrapHolderW--;
		},
		fadeElement: function(){
			if (this.options.simple) {
				this.list.eq(this.last).hide();
				this.list.removeClass('active').eq(this.active).addClass('active').show();
			} else {
				this.list.eq(this.last).animate({opacity:0}, {queue:false, duration: this.options.duration});
				this.list.removeClass('active').eq(this.active).addClass('active').animate({
					opacity:1
				}, {queue:false, duration: this.options.duration, complete: function(){
					jQuery(this).css('opacity','auto');
				}});
			}
			if (this.options.switcher) this.switcher.removeClass('active').eq(this.active).addClass('active');
			this.last = this.active;
		},
		scrollElement: function(){
			if (!this.options.direction) this.list.animate({marginLeft: -(this.woh * this.active)}, {queue:false, duration: this.options.duration});
			else this.list.animate({marginTop: -(this.woh * this.active)}, {queue:false, duration: this.options.duration});
			if (this.options.switcher) this.switcher.removeClass('active').eq(this.active).addClass('active');
		},
		runTimer: function($this){
			if($this._t) clearTimeout($this._t);
			$this._t = setInterval(function(){
				$this.toPrepare($this, true);
			}, this.options.autoRotation);
		},
		initEventSwitcher: function($this, el){
			el.bind($this.options.event, function(){
				$this.active = $this.switcher.index(jQuery(this));
				if ($this.active == 0) {
					$this.prevBtn.addClass($this.options.disableBtn);
					$this.nextBtn.removeClass($this.options.disableBtn);
				}
				else if ($this.active == $this.count) {
					$this.nextBtn.addClass($this.options.disableBtn);
					$this.prevBtn.removeClass($this.options.disableBtn);
				}
				else {
					$this.prevBtn.removeClass($this.options.disableBtn);
					$this.nextBtn.removeClass($this.options.disableBtn);
				}
				if($this._t) clearTimeout($this._t);
				if (!$this.options.effect) $this.scrollElement();
				else $this.fadeElement();
				if ($this.options.autoRotation) $this.runTimer($this);
				return false;
			});
		},
		initEvent: function($this, addEventEl, addDisClass, dir){
			addEventEl.bind($this.options.event, function(){
				if($this._t) clearTimeout($this._t);
				if ($this.options.disableBtn &&($this.count > $this.wrapHolderW)) addDisClass.removeClass($this.options.disableBtn);
				$this.toPrepare($this, dir);
				if ($this.options.autoRotation) $this.runTimer($this);
				return false;
			});
		},
		toPrepare: function($this, side){
			if (($this.active == $this.rew) && $this.options.circle && side) $this.active = -$this.options.slideElement;
			if (($this.active == 0) && $this.options.circle && !side) $this.active = $this.rew + $this.options.slideElement;
			for (var i = 0; i < $this.options.slideElement; i++){
				if (side) {
					if ($this.active + 1 > $this.rew) {
						if ($this.options.disableBtn && ($this.count > $this.wrapHolderW)) $this.nextBtn.addClass($this.options.disableBtn);
					}
					else $this.active++;
				}
				else{
					if ($this.active - 1 < 0) {
						if ($this.options.disableBtn && ($this.count > $this.wrapHolderW)) $this.prevBtn.addClass($this.options.disableBtn);
					}
					else $this.active--;
				}
			};
			if ($this.active == $this.rew && side) if ($this.options.disableBtn &&($this.count > $this.wrapHolderW)) $this.nextBtn.addClass($this.options.disableBtn);
			if ($this.active == 0 && !side) if ($this.options.disableBtn &&($this.count > $this.wrapHolderW)) $this.prevBtn.addClass($this.options.disableBtn);
			if (!$this.options.effect) $this.scrollElement();
			else $this.fadeElement();
		},
		stop: function(){
			if (this._t) clearTimeout(this._t);
		},
		play: function(){
			if (this._t) clearTimeout(this._t);
			if (this.options.autoRotation) this.runTimer(this);
		}
	}
}(jQuery));
function initPage()
{
	clearFormFields({
		clearInputs: true,
		clearTextareas: true,
		passwordFieldText: false,
		addClassFocus: "focus",
		filterClass: "default"
	});
}
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";
	}
}
if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);
/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158; 
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});

/**
 * jQuery Roundabout - v1.1
 * http://fredhq.com/projects/roundabout/
 *
 * Moves list-items of enabled ordered and unordered lists long
 * a chosen path. Includes the default "lazySusan" path, that
 * moves items long a spinning turntable.
 *
 * Terms of Use // jQuery Roundabout
 * 
 * Open source under the BSD license
 *
 * Copyright (c) 2010, Fred LeBlanc
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials provided 
 *     with the distribution.
 *   - Neither the name of the author nor the names of its contributors 
 *     may be used to endorse or promote products derived from this 
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */

jQuery.extend({roundabout_shape:{def:'lazySusan',lazySusan:function(r,a,t){return{x:Math.sin(r+a),y:(Math.sin(r+3*Math.PI/2+a)/8)*t,z:(Math.cos(r+a)+1)/2,scale:(Math.sin(r+Math.PI/2+a)/2)+0.5}}}});jQuery.fn.roundabout=function(){var options=(typeof arguments[0]!='object')?{}:arguments[0];options={bearing:(typeof options.bearing=='undefined')?0.0:jQuery.roundabout_toFloat(options.bearing%360.0),tilt:(typeof options.tilt=='undefined')?0.0:jQuery.roundabout_toFloat(options.tilt),minZ:(typeof options.minZ=='undefined')?100:parseInt(options.minZ,10),maxZ:(typeof options.maxZ=='undefined')?400:parseInt(options.maxZ,10),minOpacity:(typeof options.minOpacity=='undefined')?0.40:jQuery.roundabout_toFloat(options.minOpacity),maxOpacity:(typeof options.maxOpacity=='undefined')?1.00:jQuery.roundabout_toFloat(options.maxOpacity),minScale:(typeof options.minScale=='undefined')?0.40:jQuery.roundabout_toFloat(options.minScale),maxScale:(typeof options.maxScale=='undefined')?1.00:jQuery.roundabout_toFloat(options.maxScale),duration:(typeof options.duration=='undefined')?600:parseInt(options.duration,10),btnNext:options.btnNext||null,btnPrev:options.btnPrev||null,easing:options.easing||'swing',clickToFocus:(options.clickToFocus!==false),focusBearing:(typeof options.focusBearing=='undefined')?0.0:jQuery.roundabout_toFloat(options.focusBearing%360.0),shape:options.shape||'lazySusan',debug:options.debug||false,childSelector:options.childSelector||'li',startingChild:(typeof options.startingChild=='undefined')?null:parseInt(options.startingChild,10),reflect:(typeof options.reflect=='undefined'||options.reflect===false)?false:true};this.each(function(i){var ref=jQuery(this);var period=jQuery.roundabout_toFloat(360.0/ref.children(options.childSelector).length);var startingBearing=(options.startingChild===null)?options.bearing:options.startingChild*period;ref.addClass('roundabout-holder').css('padding',0).css('position','relative').css('z-index',options.minZ);ref.data('roundabout',{'bearing':startingBearing,'tilt':options.tilt,'minZ':options.minZ,'maxZ':options.maxZ,'minOpacity':options.minOpacity,'maxOpacity':options.maxOpacity,'minScale':options.minScale,'maxScale':options.maxScale,'duration':options.duration,'easing':options.easing,'clickToFocus':options.clickToFocus,'focusBearing':options.focusBearing,'animating':0,'childInFocus':-1,'shape':options.shape,'period':period,'debug':options.debug,'childSelector':options.childSelector,'reflect':options.reflect});if(options.clickToFocus===true){ref.children(options.childSelector).each(function(i){jQuery(this).click(function(e){var degrees=(options.reflect===true)?360.0-(period*i):period*i;degrees=jQuery.roundabout_toFloat(degrees);if(!jQuery.roundabout_isInFocus(ref,degrees)){e.preventDefault();if(ref.data('roundabout').animating===0){ref.roundabout_animateAngleToFocus(degrees)}return false}})})}if(options.btnNext){jQuery(options.btnNext).bind('click.roundabout',function(e){e.preventDefault();if(ref.data('roundabout').animating===0){ref.roundabout_animateToNextChild()}return false})}if(options.btnPrev){jQuery(options.btnPrev).bind('click.roundabout',function(e){e.preventDefault();if(ref.data('roundabout').animating===0){ref.roundabout_animateToPreviousChild()}return false})}});this.roundabout_startChildren();if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_startChildren=function(){this.each(function(i){var ref=jQuery(this);var data=ref.data('roundabout');var children=ref.children(data.childSelector);children.each(function(i){var degrees=(data.reflect===true)?360.0-(data.period*i):data.period*i;jQuery(this).addClass('roundabout-moveable-item').css('position','absolute');jQuery(this).data('roundabout',{'startWidth':jQuery(this).width(),'startHeight':jQuery(this).height(),'startFontSize':parseInt(jQuery(this).css('font-size'),10),'degrees':degrees})});ref.roundabout_updateChildPositions()});return this};jQuery.fn.roundabout_setTilt=function(newTilt){this.each(function(i){jQuery(this).data('roundabout').tilt=newTilt;jQuery(this).roundabout_updateChildPositions()});if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_setBearing=function(newBearing){this.each(function(i){jQuery(this).data('roundabout').bearing=jQuery.roundabout_toFloat(newBearing%360,2);jQuery(this).roundabout_updateChildPositions()});if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_adjustBearing=function(delta){delta=jQuery.roundabout_toFloat(delta);if(delta!==0){this.each(function(i){jQuery(this).data('roundabout').bearing=jQuery.roundabout_getBearing(jQuery(this))+delta;jQuery(this).roundabout_updateChildPositions()})}if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_adjustTilt=function(delta){delta=jQuery.roundabout_toFloat(delta);if(delta!==0){this.each(function(i){jQuery(this).data('roundabout').tilt=jQuery.roundabout_toFloat(jQuery(this).roundabout_get('tilt')+delta);jQuery(this).roundabout_updateChildPositions()})}if(typeof arguments[1]==='function'){var callback=arguments[1],ref=this;setTimeout(function(){callback(ref)},0)}return this};jQuery.fn.roundabout_animateToBearing=function(bearing){bearing=jQuery.roundabout_toFloat(bearing);var currentTime=new Date();var duration=(typeof arguments[1]=='undefined')?null:arguments[1];var easingType=(typeof arguments[2]=='undefined')?null:arguments[2];var passedData=(typeof arguments[3]!=='object')?null:arguments[3];this.each(function(i){var ref=jQuery(this),data=ref.data('roundabout'),timer,easingFn,newBearing;var thisDuration=(duration===null)?data.duration:duration;var thisEasingType=(easingType!==null)?easingType:data.easing||'swing';if(passedData===null){passedData={timerStart:currentTime,start:jQuery.roundabout_getBearing(ref),totalTime:thisDuration}}timer=currentTime-passedData.timerStart;if(timer<thisDuration){data.animating=1;if(typeof jQuery.easing.def=='string'){easingFn=jQuery.easing[thisEasingType]||jQuery.easing[jQuery.easing.def];newBearing=easingFn(null,timer,passedData.start,bearing-passedData.start,passedData.totalTime)}else{newBearing=jQuery.easing[thisEasingType]((timer/passedData.totalTime),timer,passedData.start,bearing-passedData.start,passedData.totalTime)}ref.roundabout_setBearing(newBearing,function(){ref.roundabout_animateToBearing(bearing,thisDuration,thisEasingType,passedData)})}else{bearing=(bearing<0)?bearing+360:bearing%360;data.animating=0;ref.roundabout_setBearing(bearing)}});return this};jQuery.fn.roundabout_animateToDelta=function(delta){var duration=arguments[1],easing=arguments[2];this.each(function(i){delta=jQuery.roundabout_getBearing(jQuery(this))+jQuery.roundabout_toFloat(delta);jQuery(this).roundabout_animateToBearing(delta,duration,easing)});return this};jQuery.fn.roundabout_animateToChild=function(childPos){var duration=arguments[1],easing=arguments[2];this.each(function(i){var ref=jQuery(this),data=ref.data('roundabout');if(data.childInFocus!==childPos&&data.animating===0){var child=jQuery(ref.children(data.childSelector)[childPos]);ref.roundabout_animateAngleToFocus(child.data('roundabout').degrees,duration,easing)}});return this};jQuery.fn.roundabout_animateToNearbyChild=function(passedArgs,which){var duration=passedArgs[0],easing=passedArgs[1];this.each(function(i){var data=jQuery(this).data('roundabout');var bearing=jQuery.roundabout_toFloat(360.0-jQuery.roundabout_getBearing(jQuery(this)));var period=data.period,j=0,range;var reflect=data.reflect;var length=jQuery(this).children(data.childSelector).length;bearing=(reflect===true)?bearing%360.0:bearing;if(data.animating===0){if((reflect===false&&which==='next')||(reflect===true&&which!=='next')){bearing=(bearing===0)?360:bearing;while(true&&j<length){range={lower:jQuery.roundabout_toFloat(period*j),upper:jQuery.roundabout_toFloat(period*(j+1))};range.upper=(j==length-1)?360.0:range.upper;if(bearing<=range.upper&&bearing>range.lower){jQuery(this).roundabout_animateToDelta(bearing-range.lower,duration,easing);break}j++}}else{while(true){range={lower:jQuery.roundabout_toFloat(period*j),upper:jQuery.roundabout_toFloat(period*(j+1))};range.upper=(j==length-1)?360.0:range.upper;if(bearing>=range.lower&&bearing<range.upper){jQuery(this).roundabout_animateToDelta(bearing-range.upper,duration,easing);break}j++}}}});return this};jQuery.fn.roundabout_animateToNextChild=function(){return this.roundabout_animateToNearbyChild(arguments,'next')};jQuery.fn.roundabout_animateToPreviousChild=function(){return this.roundabout_animateToNearbyChild(arguments,'previous')};jQuery.fn.roundabout_animateAngleToFocus=function(target){var duration=arguments[1],easing=arguments[2];this.each(function(i){var delta=jQuery.roundabout_getBearing(jQuery(this))-target;delta=(Math.abs(360.0-delta)<Math.abs(0.0-delta))?360.0-delta:0.0-delta;delta=(delta>180)?-(360.0-delta):delta;if(delta!==0){jQuery(this).roundabout_animateToDelta(delta,duration,easing)}});return this};jQuery.fn.roundabout_updateChildPositions=function(){this.each(function(i){var ref=jQuery(this),data=ref.data('roundabout');var inFocus=-1;var info={bearing:jQuery.roundabout_getBearing(ref),tilt:data.tilt,stage:{width:Math.floor(ref.width()*0.9),height:Math.floor(ref.height()*0.9)},animating:data.animating,inFocus:data.childInFocus,focusBearingRad:jQuery.roundabout_degToRad(data.focusBearing),shape:jQuery.roundabout_shape[data.shape]||jQuery.roundabout_shape[jQuery.roundabout_shape.def]};info.midStage={width:info.stage.width/2,height:info.stage.height/2};info.nudge={width:info.midStage.width+info.stage.width*0.05,height:info.midStage.height+info.stage.height*0.05};info.zValues={min:data.minZ,max:data.maxZ,diff:data.maxZ-data.minZ};info.opacity={min:data.minOpacity,max:data.maxOpacity,diff:data.maxOpacity-data.minOpacity};info.scale={min:data.minScale,max:data.maxScale,diff:data.maxScale-data.minScale};ref.children(data.childSelector).each(function(i){if(jQuery.roundabout_updateChildPosition(jQuery(this),ref,info,i)&&info.animating===0){inFocus=i;jQuery(this).addClass('roundabout-in-focus')}else{jQuery(this).removeClass('roundabout-in-focus')}});if(inFocus!==info.inFocus){jQuery.roundabout_triggerEvent(ref,info.inFocus,'blur');if(inFocus!==-1){jQuery.roundabout_triggerEvent(ref,inFocus,'focus')}data.childInFocus=inFocus}});return this};jQuery.roundabout_getBearing=function(el){return jQuery.roundabout_toFloat(el.data('roundabout').bearing)%360};jQuery.roundabout_degToRad=function(degrees){return(degrees%360.0)*Math.PI/180.0};jQuery.roundabout_isInFocus=function(el,target){return(jQuery.roundabout_getBearing(el)%360===(target%360))};jQuery.roundabout_triggerEvent=function(el,child,eventType){return(child<0)?this:jQuery(el.children(el.data('roundabout').childSelector)[child]).trigger(eventType)};jQuery.roundabout_toFloat=function(number){number=Math.round(parseFloat(number)*1000)/1000;return parseFloat(number.toFixed(2))};jQuery.roundabout_updateChildPosition=function(child,container,info,childPos){var ref=jQuery(child),data=ref.data('roundabout'),out=[];var rad=jQuery.roundabout_degToRad((360.0-ref.data('roundabout').degrees)+info.bearing);while(rad<0){rad=rad+Math.PI*2}while(rad>Math.PI*2){rad=rad-Math.PI*2}var factors=info.shape(rad,info.focusBearingRad,info.tilt);factors.scale=(factors.scale>1)?1:factors.scale;factors.adjustedScale=(info.scale.min+(info.scale.diff*factors.scale)).toFixed(4);factors.width=(factors.adjustedScale*data.startWidth).toFixed(4);factors.height=(factors.adjustedScale*data.startHeight).toFixed(4);ref.css('left',((factors.x*info.midStage.width+info.nudge.width)-factors.width/2.0).toFixed(1)+'px').css('top',((factors.y*info.midStage.height+info.nudge.height)-factors.height/2.0).toFixed(1)+'px').css('width',factors.width+'px').css('height',factors.height+'px').css('opacity',(info.opacity.min+(info.opacity.diff*factors.scale)).toFixed(2)).css('z-index',Math.round(info.zValues.min+(info.zValues.diff*factors.z))).css('font-size',(factors.adjustedScale*data.startFontSize).toFixed(2)+'px').attr('current-scale',factors.adjustedScale);if(container.data('roundabout').debug===true){out.push('<div style="font-weight: normal; font-size: 10px; padding: 2px; width: '+ref.css('width')+'; background-color: #ffc;">');out.push('<strong style="font-size: 12px; white-space: nowrap;">Child '+childPos+'</strong><br />');out.push('<strong>left:</strong> '+ref.css('left')+'<br /><strong>top:</strong> '+ref.css('top')+'<br />');out.push('<strong>width:</strong> '+ref.css('width')+'<br /><strong>opacity:</strong> '+ref.css('opacity')+'<br />');out.push('<strong>z-index:</strong> '+ref.css('z-index')+'<br /><strong>font-size:</strong> '+ref.css('font-size')+'<br />');out.push('<strong>scale:</strong> '+ref.attr('current-scale'));out.push('</div>');ref.html(out.join(''))}return jQuery.roundabout_isInFocus(container,ref.data('roundabout').degrees)};