/**
 * jQuery Roundabout - v1.0 (minified)
 * 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) 2009, 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:parseFloat(options.bearing%360.0,4),tilt:(typeof options.tilt=='undefined')?0.0:parseFloat(options.tilt,4),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:parseFloat(options.minOpacity,2),maxOpacity:(typeof options.maxOpacity=='undefined')?1.00:parseFloat(options.maxOpacity,2),minScale:(typeof options.minScale=='undefined')?0.40:parseFloat(options.minScale,2),maxScale:(typeof options.maxScale=='undefined')?1.00:parseFloat(options.maxScale,2),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:parseFloat(options.focusBearing%360.0,4),shape:options.shape||'lazySusan',debug:options.debug||false,childSelector:options.childSelector||'li',startingChild:(typeof options.startingChild=='undefined')?null:parseInt(options.startingChild,10)};

this.each(function(i){
	var ref=jQuery(this);

	var childSelector=options.childSelector;
	var children=ref.children(childSelector);
	var period=360.0/children.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).attr('bearing',startingBearing).attr('tilt',options.tilt).attr('minZ',options.minZ).attr('maxZ',options.maxZ).attr('minOpacity',options.minOpacity).attr('maxOpacity',options.maxOpacity).attr('minScale',options.minScale).attr('maxScale',options.maxScale).attr('duration',options.duration).attr('easing',options.easing).attr('clickToFocus',options.clickToFocus).attr('focusBearing',options.focusBearing).attr('animating','0').attr('childInFocus',-1).attr('shape',options.shape).attr('period',period).attr('debug',options.debug).attr('childSelector',options.childSelector);

children.each(function(i){
	var degrees=period*i;

	var startPos;

	jQuery(this).addClass('roundabout-moveable-item').css('position','absolute').attr('degrees',degrees);

startPos=[jQuery(this).width(),jQuery(this).height(),parseInt(jQuery(this).css('font-size'),10)];

jQuery(this).attr('startPos',startPos.join(','));

if(options.clickToFocus===true){
	jQuery(this).click(function(e){
	if(!jQuery.roundabout_isInFocus(ref,degrees)){
	e.preventDefault();

if(ref.attr('animating')=='0'){
	ref.roundabout_animateAngleToFocus(degrees)}return false}})}});

if(options.btnNext){
	jQuery(options.btnNext).click(function(e){
	e.preventDefault();

if(ref.attr('animating')=='0'){
	ref.roundabout_animateToNextChild()}return false})}if(options.btnPrev){
	jQuery(options.btnPrev).click(function(e){
	e.preventDefault();

if(ref.attr('animating')=='0'){
	ref.roundabout_animateToPreviousChild()}return false})}ref.roundabout_updateChildPositions()});

return this};

jQuery.fn.roundabout_setTilt=function(newTilt){
	this.each(function(i){
	jQuery(this).attr('tilt',newTilt);

jQuery(this).roundabout_updateChildPositions()});

return this};

jQuery.fn.roundabout_setBearing=function(newBearing){
	this.each(function(i){
	jQuery(this).attr('bearing',parseFloat(newBearing%360,4));

jQuery(this).roundabout_updateChildPositions()});

if(typeof arguments[1]==='function'){
	var callback=arguments[1];

setTimeout(function(){
	callback()},0)}return this};

jQuery.fn.roundabout_adjustBearing=function(delta){
	delta=parseFloat(delta,4);

if(delta!==0){
	this.each(function(i){
	jQuery(this).attr('bearing',jQuery.roundabout_getBearing(jQuery(this))+delta);

jQuery(this).roundabout_updateChildPositions()})}return this};

jQuery.fn.roundabout_adjustTilt=function(delta){
	delta=parseFloat(delta,4);

this.each(function(i){
	jQuery(this).attr('tilt',parseFloat(jQuery(this).attr('tilt'),4)+delta);

jQuery(this).roundabout_updateChildPositions()});

return this};

jQuery.fn.roundabout_animateToBearing=function(bearing){
	bearing=parseFloat(bearing,4);

var currentTime=new Date();

var data=(typeof arguments[3]!=='object')?null:arguments[3];

var duration=(typeof arguments[1]=='undefined')?null:arguments[1];

var easingType=(typeof arguments[2]!='undefined')?arguments[2]:null;

this.each(function(i){
	var ref=jQuery(this),timer,easingFn,newBearing;

var thisDuration=(duration===null)?parseInt(ref.attr('duration'),10):duration;

var thisEasingType=(easingType!==null)?easingType:ref.attr('easing')||'swing';

if(data===null){
	data={
	timerStart:currentTime,start:jQuery.roundabout_getBearing(ref),totalTime:thisDuration}}timer=currentTime-data.timerStart;

if(timer<thisDuration){
	ref.attr('animating','1');

if(typeof jQuery.easing.def=='string'){
	easingFn=jQuery.easing[thisEasingType]||jQuery.easing[jQuery.easing.def];

newBearing=easingFn(null,timer,data.start,bearing-data.start,data.totalTime)}else{
	newBearing=jQuery.easing[thisEasingType]((timer/data.totalTime),timer,data.start,bearing-data.start,data.totalTime)}ref.roundabout_setBearing(newBearing,function(){
	ref.roundabout_animateToBearing(bearing,thisDuration,thisEasingType,data)})}else{
	bearing=(bearing<0)?bearing+360:bearing%360;

ref.attr('animating','0');

ref.roundabout_setBearing(bearing)}});

return this};

jQuery.fn.roundabout_animateToDelta=function(delta){
	var duration,easing;

if(typeof arguments[1]!=='undefined'){
	duration=arguments[1]}if(typeof arguments[2]!=='undefined'){
	easing=arguments[2]}this.each(function(i){
	delta=jQuery.roundabout_getBearing(jQuery(this))+delta;

jQuery(this).roundabout_animateToBearing(delta,duration,easing)});

return this};

jQuery.fn.roundabout_animateToChild=function(childPos){
	var duration,easing;

if(typeof arguments[1]!=='undefined'){
	duration=arguments[1]}if(typeof arguments[2]!=='undefined'){
	easing=arguments[2]}this.each(function(i){
	var ref=jQuery(this);

if(parseInt(ref.attr('childInFocus'),10)!==childPos&&ref.attr('animating','0')){
	var child=jQuery(ref.children(ref.attr('childSelector'))[childPos]);

ref.roundabout_animateAngleToFocus(parseFloat(child.attr('degrees'),4),duration,easing)}});

return this};

jQuery.fn.roundabout_animateToNextChild=function(){
	var duration,easing;

if(typeof arguments[0]!=='undefined'){
	duration=arguments[0]}if(typeof arguments[1]!=='undefined'){
	easing=arguments[1]}this.each(function(i){
	if(jQuery(this).attr('animating','0')){
	var bearing=360.0-jQuery.roundabout_getBearing(jQuery(this));

var period=parseFloat(jQuery(this).attr('period'),4),j=0,range;

while(true){
	range={
	lower:period*j,upper:period*(j+1)};

if(bearing<=range.upper&&bearing>range.lower){
	jQuery(this).roundabout_animateToDelta(bearing-range.lower,duration,easing);

break}j++}}});

return this};

jQuery.fn.roundabout_animateToPreviousChild=function(){
	var duration,easing;

if(typeof arguments[0]!=='undefined'){
	duration=arguments[0]}if(typeof arguments[1]!=='undefined'){
	easing=arguments[1]}this.each(function(i){
	if(jQuery(this).attr('animating','0')){
	var bearing=360.0-jQuery.roundabout_getBearing(jQuery(this));

var period=parseFloat(jQuery(this).attr('period'),4),j=0,range;

while(true){
	range={
	lower:period*j,upper:period*(j+1)};

if(bearing>=range.lower&&bearing<range.upper){
	jQuery(this).roundabout_animateToDelta(bearing-range.upper,duration,easing);

break}j++}}});

return this};

jQuery.fn.roundabout_animateAngleToFocus=function(target){
	var duration,easing;

if(typeof arguments[1]!=='undefined'){
	duration=arguments[1]}if(typeof arguments[2]!=='undefined'){
	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);

var inFocus=-1;

var data={
	bearing:jQuery.roundabout_getBearing(ref),tilt:parseFloat(ref.attr('tilt'),4),stage:{
	width:Math.floor(ref.width()*0.9),height:Math.floor(ref.height()*0.9)},animating:ref.attr('animating'),inFocus:parseInt(ref.attr('childInFocus'),10),focusBearingRad:jQuery.roundabout_degToRad(parseFloat(ref.attr('focusBearing'),4)),shape:jQuery.roundabout_shape[ref.attr('shape')]||jQuery.roundabout_shape[jQuery.roundabout_shape.def]};

data.midStage={
	width:data.stage.width/2,height:data.stage.height/2};

data.nudge={
	width:data.midStage.width+data.stage.width*0.05,height:data.midStage.height+data.stage.height*0.05};

data.zValues={
	min:parseInt(ref.attr('minZ'),10),max:parseInt(ref.attr('maxZ'),10)};

data.zValues.diff=data.zValues.max-data.zValues.min;

data.opacity={
	min:parseFloat(ref.attr('minOpacity'),2),max:parseFloat(ref.attr('maxOpacity'),2)};

data.opacity.diff=data.opacity.max-data.opacity.min;

data.scale={
	min:parseFloat(ref.attr('minScale'),2),max:parseFloat(ref.attr('maxScale'),2)};

data.scale.diff=data.scale.max-data.scale.min;

ref.children(ref.attr('childSelector')).each(function(i){
	if(jQuery.roundabout_updateChildPosition(jQuery(this),ref,data,i)&&data.animating=='0'){
	inFocus=i;

jQuery(this).addClass('roundabout-in-focus')}else{
	jQuery(this).removeClass('roundabout-in-focus')}});

if(inFocus!==data.inFocus){
	jQuery.roundabout_triggerEvent(ref,data.inFocus,'blur');

if(inFocus!==-1){
	jQuery.roundabout_triggerEvent(ref,inFocus,'focus')}ref.attr('childInFocus',inFocus)}});

return this};

jQuery.roundabout_getBearing=function(el){
	return parseFloat(el.attr('bearing'),4)%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.attr('childSelector'))[child]).trigger(eventType)};

jQuery.roundabout_updateChildPosition=function(child,container,data,childPos){
	var ref=jQuery(child),out=[];

var startPos=ref.attr('startPos').split(',');

var itemData={
	startWidth:startPos[0],startHeight:startPos[1],startFontSize:startPos[2],degrees:parseFloat(ref.attr('degrees'),4)};

var rad=jQuery.roundabout_degToRad((360.0-itemData.degrees)+data.bearing);

while(rad<0){
	rad=rad+Math.PI*2}while(rad>Math.PI*2){
	rad=rad-Math.PI*2}var factors=data.shape(rad,data.focusBearingRad,data.tilt);

factors.scale=(factors.scale>1)?1:factors.scale;

factors.adjustedScale=(data.scale.min+(data.scale.diff*factors.scale)).toFixed(4);

factors.width=factors.adjustedScale*itemData.startWidth;

factors.height=factors.adjustedScale*itemData.startHeight;

ref.css('left',((factors.x*data.midStage.width+data.nudge.width)-factors.width/2.0).toFixed(2)+'px').css('top',((factors.y*data.midStage.height+data.nudge.height)-factors.height/2.0).toFixed(2)+'px').css('width',factors.width.toFixed(2)+'px').css('height',factors.height.toFixed(2)+'px').css('opacity',(data.opacity.min+(data.opacity.diff*factors.scale)).toFixed(2)).css('z-index',parseInt(data.zValues.min+(data.zValues.diff*factors.z),10)).css('font-size',(factors.adjustedScale*itemData.startFontSize).toFixed(2)+'px').attr('current-scale',factors.adjustedScale);

if(container.attr('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,itemData.degrees)};