var bios = {

	init: function(options){

		this.anchors = [];
		$each(document.links, function(el){
			if (el.rel && el.rel.test(/^expert/i)){
				el.onclick = this.click.pass(el, this);
				this.anchors.push(el);
			}
		}, this);
		this.eventPosition = this.position.bind(this);

		this.overlay = new Element('div').setProperty('id', 'overlay-bio').injectInside(document.body);

		this.bioBox = new Element('div').setProperty('id', 'bioBox').setStyles({display: 'none'}).injectInside(document.body);
		this.bioWrap = new Element('div').setProperty('id', 'bioWrap').injectInside(this.bioBox);
		this.bioHead = new Element('div').setProperty('id', 'bioHead').injectInside(this.bioWrap).onclick = this.overlay.onclick = this.close.bind(this);
		this.bioContent = new Element('div').setProperty('id', 'bioContent').injectInside(this.bioWrap);
		
		var nextEffect = this.nextEffect.bind(this);
		this.fx = {
			overlay: this.overlay.effect('opacity', {duration: 500}).hide(),
			bioWrap: this.bioWrap.effect('opacity', {duration: 500, onComplete: nextEffect})
		};

	},

	click: function(link){
		if (link.rel.length == 6) return this.show(link.href, link.title);

		var j, bioNum, bios = [];
		this.anchors.each(function(el){
			if (el.rel == link.rel){
				for (j = 0; j < bios.length; j++) if(bios[j][0] == el.href) break;
				if (j == bios.length){
					bios.push([el.href, el.title]);
					if (el.href == link.href) bioNum = j;
				}
			}
		}, this);
		return this.open(bios, bioNum);
	},

	show: function(url, title){
		return this.open([[url, title]], 0);
	},

	open: function(bios, bioNum){
		this.bios = bios;
		this.position();
		this.setup(true);
		this.top = window.getScrollTop() + (window.getHeight() / 15);
		this.bioBox.setStyles({top: this.top+'px', display: ''});
		this.fx.overlay.start(0.8);
		this.overlay.setStyles({display: 'block'});
		return this.changeBio(bioNum);
	},

	position: function(){
		this.overlay.setStyles({top: window.getScrollTop()+'px', height: window.getHeight()+'px'});
	},

	setup: function(open){
		var elements = $A(document.getElementsByTagName('object'));
		if (window.ie) elements.extend(document.getElementsByTagName('select'));
		elements.each(function(el){ el.style.visibility = open ? 'hidden' : ''; });
		var fn = open ? 'addEvent' : 'removeEvent';
		window[fn]('scroll', this.eventPosition)[fn]('resize', this.eventPosition);
		this.step = 0;
	},


	changeBio: function(bioNum){
		if (this.step || (bioNum < 0) || (bioNum >= this.bios.length)) return false;
		this.step = 1;
		this.activeBio = bioNum;
		this.fx.bioWrap.hide();
		this.newBio = this.bios[this.activeBio][0].split('#');
		this.newBioID = this.newBio[1].trim();
		this.nextEffect();
		//this.nextEffect;
		return true;
	},

	nextEffect: function(){
		switch (this.step++){
		case 1:
			if ($ES('div',this.bioContent).length > 0) {
				this.bioContent.firstChild.injectInside(document.body)
				}
			$(this.newBioID+'-bio').injectInside(this.bioContent);
			this.fx.bioWrap.start(1);
			break;
			this.step++;
		case 2:
			this.step = 0;
		}
	},

	close: function(){
		if (this.step < 0) return;
		this.step = -1;
		for (var f in this.fx) this.fx[f].stop();
		this.bioBox.style.display = 'none';
		this.fx.overlay.chain(this.setup.pass(false, this)).start(0);
		this.overlay.setStyles({display: 'none'});
		return false;
	}
};

window.addEvent('domready', bios.init.bind(bios));