/*
moo.fx, simple effects library built with prototype.js (http://prototype.conio.net).
by Valerio Proietti (http://mad4milk.net) MIT-style LICENSE.
for more info (http://moofx.mad4milk.net).
Sunday, March 05, 2006
v 1.2.3
*/

var fx = new Object();
//base
fx.Base = function(){};
fx.Base.prototype = {
	setOptions: function(options) {
	this.options = {
		duration: 500,
		onComplete: '',
		transition: fx.sinoidal
	}
	Object.extend(this.options, options || {});
	},

	step: function() {
		var time  = (new Date).getTime();
		if (time >= this.options.duration+this.startTime) {
			this.now = this.to;
			clearInterval (this.timer);
			this.timer = null;
			if (this.options.onComplete) setTimeout(this.options.onComplete.bind(this), 10);
		}
		else {
			var Tpos = (time - this.startTime) / (this.options.duration);
			this.now = this.options.transition(Tpos) * (this.to-this.from) + this.from;
		}
		this.increase();
	},

	custom: function(from, to) {
		if (this.timer != null) return;
		this.from = from;
		this.to = to;
		this.startTime = (new Date).getTime();
		this.timer = setInterval (this.step.bind(this), 13);
	},

	hide: function() {
		this.now = 0;
		this.increase();
	},

	clearTimer: function() {
		clearInterval(this.timer);
		this.timer = null;
	}
}

//stretchers
fx.Layout = Class.create();
fx.Layout.prototype = Object.extend(new fx.Base(), {
	initialize: function(el, options) {
		this.el = $(el);
		this.el.style.overflow = "hidden";
		this.iniWidth = this.el.offsetWidth;
		this.iniHeight = this.el.offsetHeight;
		this.setOptions(options);
	}
});

fx.Height = Class.create();
Object.extend(Object.extend(fx.Height.prototype, fx.Layout.prototype), {	
	increase: function() {
		this.el.style.height = this.now + "px";
	},

	toggle: function() {
		if (this.el.offsetHeight > 0) this.custom(this.el.offsetHeight, 0);
		else this.custom(0, this.el.scrollHeight);
	}
});

fx.Width = Class.create();
Object.extend(Object.extend(fx.Width.prototype, fx.Layout.prototype), {	
	increase: function() {
		this.el.style.width = this.now + "px";
	},

	toggle: function(){
		if (this.el.offsetWidth > 0) this.custom(this.el.offsetWidth, 0);
		else this.custom(0, this.iniWidth);
	}
});

//fader
fx.Opacity = Class.create();
fx.Opacity.prototype = Object.extend(new fx.Base(), {
	initialize: function(el, options) {
		this.el = $(el);
		this.now = 1;
		this.increase();
		this.setOptions(options);
	},

	increase: function() {
		if (this.now == 1 && (/Firefox/.test(navigator.userAgent))) this.now = 0.9999;
		this.setOpacity(this.now);
	},
	
	setOpacity: function(opacity) {
		if (opacity == 0 && this.el.style.visibility != "hidden") this.el.style.visibility = "hidden";
		else if (this.el.style.visibility != "visible") this.el.style.visibility = "visible";
		if (window.ActiveXObject) this.el.style.filter = "alpha(opacity=" + opacity*100 + ")";
		this.el.style.opacity = opacity;
	},

	toggle: function() {
		if (this.now > 0) this.custom(1, 0);
		else this.custom(0, 1);
	}
});

//transitions
fx.sinoidal = function(pos){
	return ((-Math.cos(pos*Math.PI)/2) + 0.5);
	//this transition is from script.aculo.us
}
fx.linear = function(pos){
	return pos;
}
fx.cubic = function(pos){
	return Math.pow(pos, 3);
}
fx.circ = function(pos){
	return Math.sqrt(pos);
}

/*
moo.fx pack, effects extensions for moo.fx.
by Valerio Proietti (http://mad4milk.net) MIT-style LICENSE
for more info visit (http://moofx.mad4milk.net).
Friday, April 14, 2006
v 1.2.4
*/

//smooth scroll
fx.Scroll = Class.create();
fx.Scroll.prototype = Object.extend(new fx.Base(), {
	initialize: function(options) {
		this.setOptions(options);
	},

	scrollTo: function(el){
		var dest = Position.cumulativeOffset($(el))[1];
		var client = window.innerHeight || document.documentElement.clientHeight;
		var full = document.documentElement.scrollHeight;
		var top = window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop;
		if (dest+client > full) this.custom(top, dest - client + (full-dest));
		else this.custom(top, dest);
	},

	increase: function(){
		window.scrollTo(0, this.now);
	}
});

//text size modify, now works with pixels too.
fx.Text = Class.create();
fx.Text.prototype = Object.extend(new fx.Base(), {
	initialize: function(el, options) {
		this.el = $(el);
		this.setOptions(options);
		if (!this.options.unit) this.options.unit = "em";
	},

	increase: function() {
		this.el.style.fontSize = this.now + this.options.unit;
	}
});

//composition effect: widht/height/opacity
fx.Combo = Class.create();
fx.Combo.prototype = {
	setOptions: function(options) {
		this.options = {
			opacity: true,
			height: true,
			width: false
		}
		Object.extend(this.options, options || {});
	},

	initialize: function(el, options) {
		this.el = $(el);
		this.setOptions(options);
		if (this.options.opacity) {
			this.o = new fx.Opacity(el, options);
			options.onComplete = null;
		}
		if (this.options.height) {
			this.h = new fx.Height(el, options);
			options.onComplete = null;
		}
		if (this.options.width) this.w = new fx.Width(el, options);
	},
	
	toggle: function() { this.checkExec('toggle'); },

	hide: function(){ this.checkExec('hide'); },
	
	clearTimer: function(){ this.checkExec('clearTimer'); },
	
	checkExec: function(func){
		if (this.o) this.o[func]();
		if (this.h) this.h[func]();
		if (this.w) this.w[func]();
	},
	
	//only if width+height
	resizeTo: function(hto, wto) {
		if (this.h && this.w) {
			this.h.custom(this.el.offsetHeight, this.el.offsetHeight + hto);
			this.w.custom(this.el.offsetWidth, this.el.offsetWidth + wto);
		}
	},

	customSize: function(hto, wto) {
		if (this.h && this.w) {
			this.h.custom(this.el.offsetHeight, hto);
			this.w.custom(this.el.offsetWidth, wto);
		}
	}
}

fx.Accordion = Class.create();
fx.Accordion.prototype = {
	setOptions: function(options) {
		this.options = {
			delay: 100,
			opacity: false
		}
		Object.extend(this.options, options || {});
	},

	initialize: function(togglers, elements, options) {
		this.elements = elements;
		this.setOptions(options);
		var options = options || '';
		this.fxa = [];
		if (options && options.onComplete) options.onFinish = options.onComplete;
		elements.each(function(el, i){
			options.onComplete = function(){
				if (el.offsetHeight > 0) el.style.height = '1%';
				if (options.onFinish) options.onFinish(el);
			}
			this.fxa[i] = new fx.Combo(el, options);
			this.fxa[i].hide();
		}.bind(this));

		togglers.each(function(tog, i){
			if (typeof tog.onclick == 'function') var exClick = tog.onclick;
			tog.onclick = function(){
				if (exClick) exClick();					
				this.showThisHideOpen(elements[i]);
				this.changeTabClass(tog);			
			}.bind(this);
		}.bind(this));
	},
	
	changeTabClass : function (el) {
		for (i=0; i <  $('bzprodtabs').childNodes.length; i++) {
			node =  $('bzprodtabs').childNodes[i];
			if (node.nodeName.toLowerCase()=="li") {
				// Clear All Selected Tabs
				if (node != el) {
					node.className = 'tab';
				}
				else {
					el.className="selected";
				}
			}
		}	
	},

	showThisHideOpen: function(toShow){
		this.elements.each(function(el, j){
			if (el.offsetHeight > 0 && el != toShow) this.clearAndToggle(el, j);
			if (el == toShow && toShow.offsetHeight == 0) setTimeout(function(){this.clearAndToggle(toShow, j);}.bind(this), this.options.delay);
		}.bind(this));
	},

	clearAndToggle: function(el, i){
		this.fxa[i].clearTimer();
		this.fxa[i].toggle();
	}
}

var Remember = new Object();
Remember = function(){};
Remember.prototype = {
	initialize: function(el, options){
		this.el = $(el);
		this.days = 365;
		this.options = options;
		this.effect();
		var cookie = this.readCookie();
		if (cookie) {
			this.fx.now = cookie;
			this.fx.increase();
		}
	},

	//cookie functions based on code by Peter-Paul Koch
	setCookie: function(value) {
		var date = new Date();
		date.setTime(date.getTime()+(this.days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
		document.cookie = this.el+this.el.id+this.prefix+"="+value+expires+"; path=/";
	},

	readCookie: function() {
		var nameEQ = this.el+this.el.id+this.prefix + "=";
		var ca = document.cookie.split(';');
		for(var i=0;c=ca[i];i++) {
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return false;
	},

	custom: function(from, to){
		if (this.fx.now != to) {
			this.setCookie(to);
			this.fx.custom(from, to);
		}
	}
}

fx.RememberHeight = Class.create();
fx.RememberHeight.prototype = Object.extend(new Remember(), {
	effect: function(){
		this.fx = new fx.Height(this.el, this.options);
		this.prefix = 'height';
	},
	
	toggle: function(){
		if (this.el.offsetHeight == 0) this.setCookie(this.el.scrollHeight);
		else this.setCookie(0);
		this.fx.toggle();
	},
	
	resize: function(to){
		this.setCookie(this.el.offsetHeight+to);
		this.fx.custom(this.el.offsetHeight,this.el.offsetHeight+to);
	},

	hide: function(){
		if (!this.readCookie()) {
			this.fx.hide();
		}
	}
});

fx.RememberText = Class.create();
fx.RememberText.prototype = Object.extend(new Remember(), {
	effect: function(){
		this.fx = new fx.Text(this.el, this.options);
		this.prefix = 'text';
	}
});

//useful for-replacement
Array.prototype.iterate = function(func){
	for(var i=0;i<this.length;i++) func(this[i], i);
}
if (!Array.prototype.each) Array.prototype.each = Array.prototype.iterate;

//Easing Equations (c) 2003 Robert Penner, all rights reserved.
//This work is subject to the terms in http://www.robertpenner.com/easing_terms_of_use.html.

//expo
fx.expoIn = function(pos){
	return Math.pow(2, 10 * (pos - 1));
}
fx.expoOut = function(pos){
	return (-Math.pow(2, -10 * pos) + 1);
}

//quad
fx.quadIn = function(pos){
	return Math.pow(pos, 2);
}
fx.quadOut = function(pos){
	return -(pos)*(pos-2);
}

//circ
fx.circOut = function(pos){
	return Math.sqrt(1 - Math.pow(pos-1,2));
}
fx.circIn = function(pos){
	return -(Math.sqrt(1 - Math.pow(pos, 2)) - 1);
}

//back
fx.backIn = function(pos){
	return (pos)*pos*((2.7)*pos - 1.7);
}
fx.backOut = function(pos){
	return ((pos-1)*(pos-1)*((2.7)*(pos-1) + 1.7) + 1);
}

//sine
fx.sineOut = function(pos){
	return Math.sin(pos * (Math.PI/2));
}
fx.sineIn = function(pos){
	return -Math.cos(pos * (Math.PI/2)) + 1;
}
fx.sineInOut = function(pos){
	return -(Math.cos(Math.PI*pos) - 1)/2;
}

fx.Flash = Class.create();
Object.extend(Object.extend(fx.Flash.prototype, fx.Base.prototype), {	
	hD: "0123456789ABCDEF",
	
	initialize: function(el, options) {
		this.el = $(el);

		var color_from = (options && options.color_from) || "#ffffff";
		var color_to = (options && options.color_to) || "#ff0000";
		var color_f = this.h2d(color_from.substr(1));
		var color_t = this.h2d(color_to.substr(1));
		
		var _options = {
			red: [color_f >> 16, color_t >> 16],
			green: [(color_f >> 8) & 255, (color_t >> 8) & 255],
			blue: [color_f & 255, color_t & 255],
			count: 1
		};
		Object.extend(_options, options || {});
		if (_options.onComplete) _options.flashOnComplete = _options.onComplete;
		this.setOptions(_options);
	},
	
	increase: function() {
		var r = this.d2h(this.now * (this.options.red[0] - this.options.red[1]) / 255 + this.options.red[1]);
		var g = this.d2h(this.now * (this.options.green[0] - this.options.green[1]) / 255 + this.options.green[1]);
		var b = this.d2h(this.now * (this.options.blue[0] - this.options.blue[1]) / 255 + this.options.blue[1]);
		this.el.style.backgroundColor = "#" + r + g + b;
	},

	toggle: function() {
		if (this.flashCount == undefined) this.flashCount = this.options.count;
		this.options.onComplete = this.onComplete.bind(this);
		this.custom(255, 0);
	},
	
	onComplete: function() {
		this.flashCount--;
		if (this.flashCount == 0)
		{
			this.flashCount = undefined;
			this.options.onComplete = this.options.flashOnComplete;
		} else
			this.options.onComplete = this.toggle.bind(this);
		this.custom(0, 255);
	},
	
	d2h: function(d) {
		var h = this.hD.substr(d & 15, 1);
		while (d > 15) { d >>= 4; h = this.hD.substr(d & 15, 1) + h; }
		if (h.length == 1) h = "0" + h;
		return h;
	},
	
	h2d: function(h) {
		return parseInt(h, 16);
	}
});

//moo.dom by Valerio Proietti (http://mad4milk.net) MIT Open Source license;
//v 1.5 (beta);

function $S() {
	var elements = [];
	$c(arguments).each(function(sel){
		if (typeof sel == 'string') {
			sel.getElements().each(function(el){
				elements.push(el);
			});
		}
		else elements.push(sel);
	});
	return elements;
}

/*------------------String Prototypes----------------------*/

Object.extend(String.prototype, {
	getElements: function(filter){
		var params = [];
		this.split(' ').each(function(arg, j){
			params[j] = param = [];
			if (arg.indexOf('#') > -1) {
				var bits = arg.split('#');
				param['tag'] = bits[0] || '*';
				param['id'] = bits[1];
			}
			else if (arg.indexOf('.') > -1) {
				var bits = arg.split('.');
				param['tag'] = bits[0] || '*';
				param['class'] = bits[1];
			}
			else param['tag'] = arg;
		});
		var filter = filter || document;
		filter = $c(filter.getElementsByTagName('*'));
		params.each(function(param, k){
			if (param['tag'] != '*' && k == 0) filter = filter.filterByTagName(param['tag']);
			else if (k != 0) filter = filter.getElementsByTagName(param['tag']);
			if (param['id']) filter = filter.filterById(param['id']);
			if (param['class']) filter = filter.filterByClassName(param['class']);
		});
		return filter;
	},
	
	getElementsBySelector: function(filter){
		if (!filter) filter = null;
		var elements = [];
		this.split(',').each(function(selector){
			elmnts = selector.replace(/^\s*|\s*$/g,"").getElements(filter);
			elmnts.each(function(el){
				elements.push(el);
			});
		});
		return elements;
	}
});


/*----------------------Array Prototypes-----------------------*/

function $c(array){
	var nArray = [];
	for (i=0;el=array[i];i++) nArray.push(el);
	return nArray;
}

Object.extend(Array.prototype, {
	iterate: function(func){
		for(var i=0;ob=this[i];i++) func(ob, i);
	},

	action: function(actions){
		this.each(function(el){
			if (actions.initialize) actions.initialize.apply(el);
			for(action in actions){
				if (action.slice(0,2) == 'on') el[action] = actions[action];
			}
		});
	},
	
	filterById: function(id){
		var found = [];
		this.each(function(el){
			if (el.id == id) found.push(el);
		});
		return found;
	},

	filterByClassName: function(className){
		var found = [];
		this.each(function(el){
			if (Element.hasClassName(el, className)) found.push(el);
		});
		return found;
	},

	filterByTagName: function(tagName){
		var found = [];
		this.each(function(el){
			if (el.tagName.toLowerCase() == tagName) found.push(el);
		});
		return found;
	},

	getElementsByTagName: function(tagName){
		var found = [];
		this.each(function(el){
			$c(el.getElementsByTagName(tagName)).each(function(tn){
				found.push(tn);
			});
		});
		return found;
	}
});

if(!Array.prototype.each) Array.prototype.each = Array.prototype.iterate;