Slideshow.KenBurns=new Class({Extends:Slideshow,options:{pan:[100,100],zoom:[50,50]},initialize:function(el,data,options){options.overlap=true;options.resize=true;['pan','zoom'].each(function(p){if($chk(this[p])){if($type(this[p])!='array')this[p]=[this[p],this[p]];this[p].map(function(n){return(n.toInt()||0).limit(0,100);});}},options);this.parent(el,data,options);},_show:function(fast){if(!this.image.retrieve('morph')){['a','b'].each(function(image){this[image].set('tween',{'duration':this.options.duration,'link':'cancel','onStart':this._start.bind(this),'onComplete':this._complete.bind(this),'property':'opacity'}).get('morph',{'duration':(this.options.delay+this.options.duration*2),'link':'cancel','transition':$arguments(0)});},this);}
this.image.set('styles',{'bottom':'auto','left':'auto','right':'auto','top':'auto'});var props=['top left','top right','bottom left','bottom right'][this.counter%4].split(' ');props.each(function(prop){this.image.setStyle(prop,0);},this);dh=this.height/this.preloader.height;dw=this.width/this.preloader.width;delta=(dw>dh)?dw:dh;var values={};var zoom=($random.run(this.options.zoom)/100.0)+1;var pan=Math.abs(($random.run(this.options.pan)/100.0)-1);['height','width'].each(function(prop,i){var e=Math.ceil(this.preloader[prop]*delta);var s=(e*zoom).toInt();values[prop]=[s,e];if(dw>dh||i){e=(this[prop]-this.image[prop]);s=(e*pan).toInt();values[props[i]]=[s,e];}},this);var paused=(this.firstrun&&this.options.paused);if(fast||paused){this._center(this.image);this.image.get('morph').cancel();if(paused)
this.image.get('tween').cancel().set(0).start(1);else
this.image.get('tween').cancel().set(1);}
else{this.image.get('morph').start(values);this.image.get('tween').set(0).start(1);}}});