var ProtoSlider=Class.create({initialize:function(id,settings){settings=settings||{};if(!id||!$(id)){throw"No protoSlider container found!";}
this._ns_slider={container:$(id),nav:{ext:[],lr:[]},dim:this._dimensions($(id)),path:this._path(),ptimer:null,resize:false,slide:0,slides:[],timer:null,task:{slide:-1,type:1,effect:null,speedup:false},work:[],working:false};Object.extend(this._ns_slider,{settings:{navigation:settings.navigation||false,navId:settings.navId||null,navOpacity:settings.navOpacity||0.7,onChange:settings.onChange||null,onFinished:settings.onFinished||null,fps:this._check(settings.fps,1,30,25),duration:this._check(settings.duration,100,10000,2000),interval:this._check(settings.interval,100,1000000,5000),hoverPause:settings.hoverPause||true,effect:settings.effect||null,columns:this._check(settings.columns,1,100,0),rows:this._check(settings.rows,1,100,0),seat:this._check(settings.seat,0,1,0.25),speedup:this._check(settings.speedup,1,10,2)}});this._validate();this._ns_slider.container.setStyle({height:this._ns_slider.dim.height+'px',width:this._ns_slider.dim.width+'px'});this._ns_slider.container.observe('mouseover',this._onMouseOver.bindAsEventListener(this));this._ns_slider.container.observe('mouseout',this._onMouseOut.bindAsEventListener(this));this._init();this._create();this._createNavigation();this.play();},cancel:function(){var ropt;for(var i=0;i<this._ns_slider.work.length;i++){if(this._ns_slider.work[i].type==1&&(ropt=this._ns_slider.work[i])){this._ns_slider.work.splice(i,1);this._ns_slider.slides[this._ns_slider.slide].meta.remove();this._ns_slider.slides[this._ns_slider.slide].meta.reset();this._onChange(ropt.prev,this._ns_slider.slide);this._ns_slider.slide=ropt.prev;}}},count:function(){return this._ns_slider.slides.length;},current:function(){return this._ns_slider.slide;},next:function(evt){if(evt){Event.stop(evt);}
this.show(this.current()+1);},pause:function(cancel){if(this._ns_slider.ptimer){clearTimeout(this._ns_slider.ptimer);this._ns_slider.ptimer=(cancel?true:null);}},play:function(interval){if(interval){this._ns_slider.settings.interval=interval;}
if(this._ns_slider.settings.interval){if(this._ns_slider.ptimer){this.pause();}
this._ns_slider.ptimer=setTimeout(this.next.bind(this),this._ns_slider.settings.interval);}},prev:function(evt){if(evt){Event.stop(evt);}
this.show(this.current()?this.current()-1:this.count()-1);},resize:function(columns,rows){this._free();this._ns_slider.settings.columns=this._check(columns,1,100,0);this._ns_slider.settings.rows=this._check(rows,1,100,0);this._validate();this._ns_slider.resize=true;},show:function(n,effect){n=Math.abs(n?n:0)%this._ns_slider.slides.length;if(!this._ns_slider.slides.length||this._ns_slider.slide==n){return false;}
if(this._ns_slider.settings.interval&&this._ns_slider.ptimer){this.pause(true);}
if(!(effect&&this._match(effect,this._effects))){if(this._ns_slider.settings.effect){effect=this._ns_slider.settings.effect;}else{effect=this._random();}}
if(!this._ns_slider.working){this._ns_slider.working=true;this._addWork({type:1,slide:n,effect:effect,speedup:false});}else{this.cancel();this._addWork({type:1,slide:n,effect:effect,speedup:true});}
return true;},speedup:function(factor){var ropt,progress;factor=(factor>=1?factor:1);for(var i=0;i<this._ns_slider.work.length;i++){if(this._ns_slider.work[i].type==1&&(ropt=this._ns_slider.work[i])&&!ropt.speedup){ropt.speedup=true;progress=((new Date()).getTime()-ropt.timestamp)/ropt.duration;ropt.duration=Math.round(ropt.duration/factor);this._initEngineOpt(ropt,progress);break;}}},_effects:['straight','corner','random','swirl','grid','strokes1','strokes2'],_eff_engine:['alpha'],_eff_inv:':inv',_eff_od:':od',_eff_sense:[':a',':b'],_eff_trans:[':o',':ow',':oh',':owh'],_addWork:function(work){var ropt={coeff_a:[0,0],coeff_b:[0,0],coeff_f:[0,0],duration:0,fpa:0,fpse:0,opacity:[1,0,0],pattern:null,prev:0,render:null,transition:null,timestamp:0,delta:0,speedup:0,type:work.type};if(work.speedup){if(this._ns_slider.settings.speedup){work.speedup=this._ns_slider.settings.speedup;ropt.speedup=true;}}else{work.speedup=1;}
if(this._ns_slider.resize){this._create();}
switch(work.type){case 1:ropt.pattern=this._pattern(work.slide,work.effect);ropt.duration=this._ns_slider.settings.duration/work.speedup;ropt.prev=this._ns_slider.slide;ropt.render=this['_rend_engine_'+this._eff_engine[0]];if(work.effect.include(this._eff_od)){ropt.opacity[1]=ropt.opacity[0]/2;ropt.opacity[2]=ropt.opacity[0]/2;}else{ropt.opacity[1]=ropt.opacity[0];}
this._ns_slider.slides[work.slide].meta.style({opacity:0,visibility:'hidden'});this._ns_slider.slides[work.slide].meta.insert(this._ns_slider.container);this._ns_slider.slides[work.slide].meta.style({visibility:'visible'});break;case 2:break;case 3:break;}
switch(this._match(work.effect,this._eff_trans)){case'ow':ropt.transition=this._rend_trans_ow;break;case'oh':ropt.transition=this._rend_trans_oh;break;case'owh':ropt.transition=this._rend_trans_owh;break;default:case'o':ropt.transition=this._rend_trans_o;break;}
this._ns_slider.slide=work.slide;this._initEngineOpt(ropt,0,1);this._ns_slider.work.push(ropt);this._onChange(work.slide,ropt.prev);this._start();},_check:function(value,min,max,def_value){return(value!==undefined&&value>=min&&value<=max?value:def_value);},_create:function(){var elm_h=Math.round(this._ns_slider.dim.height/this._ns_slider.settings.rows);var elm_w=Math.round(this._ns_slider.dim.width/this._ns_slider.settings.columns);var last_h=this._ns_slider.dim.height-(this._ns_slider.settings.rows-1)*elm_h;var last_w=this._ns_slider.dim.width-(this._ns_slider.settings.columns-1)*elm_w;this._ns_slider.resize=false;for(var k=0;k<this._ns_slider.slides.length;k++){var slide=this._ns_slider.slides[k];for(var i=0;i<this._ns_slider.settings.rows;i++){for(var j=0;j<this._ns_slider.settings.columns;j++){var elm=new Element(slide.meta.type==1?'a':'div',{'class':'element'});var extraClass='';if((i==0)&&(j==0))extraClass='botleft';else if((i==0)&&(j==(this._ns_slider.settings.columns-1)))extraClass='botright';else if((i==(this._ns_slider.settings.rows-1))&&(j==0))extraClass='topleft';else if((i==(this._ns_slider.settings.rows-1))&&(j==(this._ns_slider.settings.columns-1)))extraClass='topright';if(extraClass!='')elm.addClassName(extraClass);elm.dim={alpha:0,height:(i===0?last_h:elm_h),width:((this._ns_slider.settings.columns-1)===j?last_w:elm_w),x:j*elm_w,y:(this._ns_slider.dim.height-last_h)-(i*elm_h),x1:0,y1:0};if(slide.meta.type==1){if(slide.meta.link.length&&slide.meta.link.indexOf('#')===-1){elm.setAttribute('href',slide.meta.link);elm.setAttribute('target','_parent');}
elm.setStyle({backgroundImage:'url('+slide.meta.url+')',backgroundPosition:(-elm.dim.x)+'px '+(-elm.dim.y)+'px'});}else{(new Element('div',{'class':slide.meta.source.classNames().toString()})).wrap(elm);elm.down('div').setStyle({left:(-elm.dim.x)+'px',top:(-elm.dim.y)+'px'});elm.down('div').innerHTML=slide.meta.source.innerHTML;}
elm.setStyle({opacity:0,left:elm.dim.x+'px',top:elm.dim.y+'px',height:elm.dim.height+'px',width:elm.dim.width+'px'});slide.push(elm);}}}},_createNavigation:function(){var dim,i;if(this._ns_slider.settings.navigation){for(i=0;i<2;i++){this._ns_slider.nav.lr[i]=new Element('a',{'class':'nav-lr'});this._ns_slider.nav.lr[i].setAttribute('href','#');this._ns_slider.nav.lr[i].update(i===0?'prev':'next');this._ns_slider.container.insert(this._ns_slider.nav.lr[i]);dim=this._ns_slider.nav.lr[i].getDimensions();this._ns_slider.nav.lr[i].setStyle({borderLeft:(i===0?'none':''),borderRight:(i===1?'none':''),opacity:this._ns_slider.settings.navOpacity,left:(i===0?0:this._ns_slider.dim.width-dim.width+'px'),top:Math.round((this._ns_slider.dim.height-dim.height)/2)+'px',visibility:'visible'});this._ns_slider.nav.lr[i].observe('click',(i===0?this.prev.bindAsEventListener(this):this.next.bindAsEventListener(this)));}}
if(this._ns_slider.settings.navId){$(this._ns_slider.settings.navId).addClassName('protoSliderNav');for(i=0;i<this._ns_slider.slides.length;i++){this._ns_slider.nav.ext[i]=new Element('span');this._ns_slider.nav.ext[i].writeAttribute('ind',i);$(this._ns_slider.settings.navId).insert(this._ns_slider.nav.ext[i]);this._ns_slider.nav.ext[i].observe('click',this._onClick.bind(this));}
this._ns_slider.nav.ext[this._ns_slider.slide].addClassName('current');}},_init:function(){var img,slide;$(this._ns_slider.container).childElements().each((function(item,index){if(!['a','div'].include(item.nodeName.toLowerCase())){return;}
else{slide=[];slide.meta={source:item,insert:this._s_insert.bind(slide),remove:this._s_remove.bind(slide),reset:this._s_reset.bind(slide),style:this._s_style.bind(slide),visibility:this._s_visibility.bind(slide)};}
if(item.nodeName.toLowerCase().match(/(a)|(div)/ig)[0]==='a'){if(!(img=item.down('img'))){return;}
slide.meta.type=1;slide.meta.link=item.href;slide.meta.text=img.next('span')?img.next('span').innerHTML:null;slide.meta.url=img.src;if(slide.meta.link.length&&slide.meta.link.indexOf('#')!==-1){item.setStyle({cursor:'default'});}}else{slide.meta.type=2;slide.meta.link=null;slide.meta.text=null;slide.meta.url=null;}
this._ns_slider.slides.push(slide);}).bind(this));},_dimensions:function(container){var slide;if((slide=container.childElements()[0])){return slide.getDimensions();}
return{height:0,width:0};},_free:function(){for(var i=0;i<this._ns_slider.slides.length;i++){for(var j=0;j<this._ns_slider.slides[i].length;j++){delete this._ns_slider.slides[i][j];}
this._ns_slider.slides[i].length=0;}
this._ns_slider.settings.columns=0;this._ns_slider.settings.rows=0;},_initEngineOpt:function(ropt,progress){ropt.fpa=Math.round(ropt.duration*this._ns_slider.settings.fps/1000);ropt.fpse=Math.round(ropt.duration*this._ns_slider.settings.seat*this._ns_slider.settings.fps/1000);ropt.fpse=(!ropt.fpse?0.01:ropt.fpse);for(var i=0;i<2;i++){ropt.coeff_a[i]=ropt.opacity[i+1]/ropt.fpse;ropt.coeff_b[i]=ropt.coeff_a[i]*(ropt.fpa-ropt.fpse)/ropt.pattern.length;}
ropt.delta=Math.round(progress*ropt.duration);ropt.timestamp=(new Date()).getTime()-ropt.delta;ropt.coeff_f[0]=this._ns_slider.settings.fps/1000;ropt.coeff_f[1]=ropt.coeff_f[0]*ropt.timestamp;},_match:function(str,set){var pattern='('+(set instanceof Array?set.join(':|'):set)+':){1}';var re=(new RegExp(pattern)).exec(str+':');if(re){return re[0].replace(/:/ig,'');}
return false;},_onChange:function(n,prev){if(this._ns_slider.settings.navId&&n!==prev){this._ns_slider.nav.ext[n].addClassName('current');this._ns_slider.nav.ext[prev].removeClassName('current');}
if(this._ns_slider.settings.onChange){this._ns_slider.settings.onChange(n);}},_onClick:function(evt){Event.stop(evt);this.show(evt.element().readAttribute('ind'));},_onFinished:function(n){if(this._ns_slider.settings.onFinished){this._ns_slider.settings.onFinished(n);}
if(this._ns_slider.settings.interval&&this._ns_slider.ptimer){this.play();}},_onMouseOver:function(evt){if(this._ns_slider.settings.interval&&this._ns_slider.settings.hoverPause){this.pause();}},_onMouseOut:function(evt){if(this._ns_slider.settings.interval&&this._ns_slider.settings.hoverPause){this.play();}},_path:function(){var path;Element.select(document,"script").each(function(val){if(val.src.match(/(protoslider\.js)/ig)){path=val.src.replace(/(protoslider\.js)/ig,"");}});return path;},_pattern:function(slide,effect){var sense=(this._match(effect,this._eff_sense)==='b'?1:0);var source=this._ns_slider.slides[slide];var pattern1=[],pattern2=[];var index1=0,index2=0;var x=0,y=0,i,j;var len=source.length;var columns=this._ns_slider.settings.columns;var rows=this._ns_slider.settings.rows;var add1=function(i){pattern1[index1++]=source[i];};var addxy1=function(x,y){pattern1[index1++]=source[x+y*columns];};var addxy2=function(x,y){pattern2[index2++]=source[x+y*columns];};switch(effect.indexOf(':')>0?effect.substr(0,effect.indexOf(':')):effect){case'straight':for(i=0;i<columns&&!sense;i++){for(j=0;j<rows;j++){addxy1(i,j);}}
for(j=rows-1;j>=0&&sense;j--){for(i=0;i<columns;i++){addxy1(i,j);}}
break;case'corner':y=(rows-1)*(1-sense);while(columns&&!(x==columns&&y==(rows-1)*sense)){for(i=x,j=y;i<columns&&sense*j>=0&&(1-sense)*j<rows;i++,(sense?j--:j++)){addxy1(i,j);}
if(sense*y<rows-1&&(1-sense)*y>(0-sense)){if(sense){y++;}else{y--;}}else{if(x<columns){x++;}}}
break;case'random':var temp;for(i=0;i<len;i++){add1(i);x=Math.round(Math.random()*i);temp=pattern1[x];pattern1[x]=pattern1[i];pattern1[i]=temp;}
break;case'swirl':var x1=0,y1=0;var x2=columns-1,y2=rows-1;while(x1<=x2&&y1<=y2){for(i=x1;i<=x2;i++){addxy1(i,y1);}y1++;for(i=y1;i<=y2;i++){addxy1(x2,i);}x2--;if(y1<=y2){for(i=x2;i>=x1;i--){addxy1(i,y2);}}y2--;if(x1<=x2){for(i=y2;i>=y1;i--){addxy1(x1,i);}}x1++;}
break;case'grid':for(i=0;i<columns;i++){for(j=rows-1;j>=0;j--){if((i+j)%2){addxy1(i,j);}
else{addxy2(i,j);}}}
pattern1=pattern1.concat(pattern2);break;case'strokes1':for(i=0;i<columns&&!sense;i++){for(j=0;j<rows;j++){addxy1(j%2?columns-i-1:i,j%2?rows-j-rows%2:j);}}
for(j=0;j<rows&&sense;j++){for(i=0;i<columns;i++){addxy1(i%2?columns-i-columns%2:i,i%2?rows-j-1:j);}}
break;case'strokes2':for(i=0;i<columns&&!sense;i++){for(j=rows-1;j>=0;j--){addxy1(i%2?columns-i-columns%2:i,i%2?rows-j-1:j);}}
for(j=0;j<rows&&sense;j++){for(i=columns-1;i>=0;i--){addxy1(j%2?columns-i-1:i,j%2?rows-j-rows%2:j);}}
break;case'':alert("oups !!!");break;}
return(effect.include(this._eff_inv)?pattern1.reverse():pattern1);},_random:function(){return this._effects[Math.round(Math.random()*(this._effects.length-1))]+
this._eff_trans[Math.round(Math.random()*(this._eff_trans.length-1))]+
this._eff_sense[Math.round(Math.random()*(this._eff_sense.length-1))]+
(Math.round(Math.random())?this._eff_inv:'')+
(Math.round(Math.random())?this._eff_od:'');},_render:function(){for(var i=0;i<this._ns_slider.work.length;i++){var ropt=this._ns_slider.work[i];var frame=Math.round((new Date()).getTime()*ropt.coeff_f[0]-ropt.coeff_f[1]);if(frame>=ropt.fpa){ropt.render(frame=ropt.fpa);this._ns_slider.slides[ropt.prev].meta.visibility(false);this._ns_slider.slides[this._ns_slider.slide].meta.visibility(true);this._ns_slider.slides[this._ns_slider.slide].meta.remove();this._ns_slider.work.splice(i--,1);this._onFinished(this._ns_slider.slide);}else{ropt.render(frame);}}
if(!this._ns_slider.work.length){if(this._ns_slider.task.slide!=-1){this._addWork(this._ns_slider.task);this._ns_slider.task.slide=-1;}else{this._ns_slider.working=false;this._stop();}}},_rend_engine_alpha:function(frame){var alpha1,alpha2;for(var i=0;i<this.pattern.length;i++){alpha1=this.coeff_a[0]*frame-this.coeff_b[0]*(i+1);alpha2=this.coeff_a[1]*frame-this.coeff_b[1]*(this.pattern.length-i);alpha1=(alpha1<0?0:(alpha1>this.opacity[1]?this.opacity[1]:alpha1))+
(alpha2<0?0:(alpha2>this.opacity[2]?this.opacity[2]:alpha2));if(this.pattern[i].dim.alpha!==alpha1){this.pattern[i].dim.alpha=alpha1;this.transition(this.pattern[i],alpha1);}}},_rend_trans_o:function(elm,alpha){elm.setStyle({opacity:alpha});},_rend_trans_h:function(elm,alpha){elm.setStyle({opacity:1,height:Math.round((alpha)*elm.dim.height)+'px'});},_rend_trans_w:function(elm,alpha){elm.setStyle({opacity:1,width:Math.round((alpha)*elm.dim.width)+'px'});},_rend_trans_oh:function(elm,alpha){elm.setStyle({opacity:alpha,height:Math.round((alpha)*elm.dim.height)+'px'});},_rend_trans_ow:function(elm,alpha){elm.setStyle({opacity:alpha,width:Math.round((alpha)*elm.dim.width)+'px'});},_rend_trans_owh:function(elm,alpha){elm.setStyle({opacity:alpha,height:Math.round((alpha)*elm.dim.height)+'px',width:Math.round((alpha)*elm.dim.width)+'px'});},_s_insert:function(container){for(var i=0;i<this.length;i++){container.insert(this[i]);}},_s_remove:function(){for(var i=0;i<this.length;i++){this[i].remove();}},_s_reset:function(){for(var i=0;i<this.length;i++){this[i].setStyle({opacity:0,left:this[i].dim.x+'px',top:this[i].dim.y+'px',height:this[i].dim.height+'px',width:this[i].dim.width+'px'});}},_s_style:function(style){for(var i=0;i<this.length;i++){this[i].setStyle(style);}},_s_visibility:function(visible){this.meta.source.setStyle({visibility:visible?'visible':'hidden'});},_start:function(){if(!this._ns_slider.timer){for(var i=0;i<this._ns_slider.work.length;i++){if(!this._ns_slider.work[i].delta){this._ns_slider.work[i].timestamp=(new Date()).getTime();}else{this._ns_slider.work[i].timestamp=(new Date()).getTime()-this._ns_slider.work[i].delta;}
this._ns_slider.work[i].coeff_f[1]=this._ns_slider.work[i].coeff_f[0]*this._ns_slider.work[i].timestamp;}
if(this._ns_slider.work.length){this._ns_slider.timer=setInterval(this._render.bind(this),Math.round(1000/this._ns_slider.settings.fps));}}},_stop:function(){if(this._ns_slider.timer){var timestamp=(new Date()).getTime();clearInterval(this._ns_slider.timer);this._ns_slider.timer=null;for(var i=0;i<this._ns_slider.work.length;i++){this._ns_slider.work[i].delta=timestamp-this._ns_slider.work[i].timestamp-
1000/this._ns_slider.settings.fps;}}},_validate:function(){if(!this._ns_slider.settings.columns||!this._ns_slider.settings.rows){throw"protoSlider: Wrong value for \"columns or rows\"";}
if(this._ns_slider.settings.columns*this._ns_slider.settings.rows>300){throw"protoSlider: \"columns * rows\" must be less than 300";}
if(this._ns_slider.settings.effect&&!this._match(this._ns_slider.settings.effect,this._effects)){throw"protoSlider: Unknown effect name";}}});ProtoSlider.version="1.0a5";