/*
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]);
			}.bind(this);
		}.bind(this));
	},

	showthishideopen: function(toshow){
		this.elements.each(function(el, j){
			if (el.offsetheight > 0 ) 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;
}