/*
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";
		if (!/Konqueror/.test(navigator.userAgent)) {
			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]);
			}.bind(this);
		}.bind(this));
	},

	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 domainname;
var isdomain = 0;
var issecure = 0;
function get_domain() {
	if (!domainname) {
		var hostsub = document.URL;
		var index = hostsub.indexOf('://')+3;
		if (index == 8)
			issecure = 1;
		hostsub = hostsub.substr(hostsub.indexOf('://')+3);
		domainname = hostsub = hostsub.substr(0, hostsub.indexOf('/'));

		var i = 0;
		while (1) {
			if (!hostsub)
				break;
			var j =	hostsub.indexOf('.') + 1;
			if (j < 1)
				break;
			hostsub = hostsub.substr(j);
			if (hostsub.indexOf('.') > -1)
				domainname = hostsub;
			i++;
		}
		isdomain = (i < 2) ? 1 : 0;
	}
}

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) {
		get_domain();

		var date = new Date();
		date.setTime(date.getTime()+(this.days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
		var cookieStr = this.el.id+"-"+this.prefix+"="+value+expires+"; path=/";

		// always try to set domain-wide cookie
		document.cookie = cookieStr + "; domain=." + domainname;

		// this is the only case we want to set a normal host cookie:
		// when the host is also the domain, which is one case where
		// domain cookies can sometimes not be read by clients
		if (isdomain)
			document.cookie = cookieStr;
	},

	readCookie: function() {
		var nameEQ = 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;
}

function getElementsByClass(searchClass, node, tag) {
  var classElements = new Array();
  if (node == null) node = document;
  if (tag == null) tag = '*';
  var els = node.getElementsByTagName(tag);
  var elsLen = els.length;
  var pattern = new RegExp("(^|\s)" + searchClass + "(\s|$)");
  for (i = 0, j = 0; i < elsLen; i++) {
    if (pattern.test(els[i].className))
      classElements[j++] = els[i];
  }
  return classElements;
}

function toggleClass(element, firstClass, secondClass) {
  var removeClass = (Element.hasClassName(element, firstClass) ? firstClass : secondClass)
  var addClass = (Element.hasClassName(element, firstClass) ? secondClass : firstClass)
    
  Element.removeClassName(element, removeClass);
  Element.addClassName(element, addClass);
}

/* Available options: remember, expanded, collapsed, none */
var menuConfig = ['remember', 'remember', 'remember', 'remember', 'remember', 'remember'];
var blocks     = [''];

function menu_transitions() {
  blocks.each(function(blockname, index) {
    block = $(blockname);
    if (!block)
      return;
    block.id = 'block' + index;
    var title = $(blockname + '-title');
    var content = $(blockname + '-content');
    if (menuConfig[index] == 'remember') {
      var slideEffect = new fx.RememberHeight(content, {duration: 300});
      Element.addClassName(block, parseInt(slideEffect.readCookie()) == 0 ? 'collapsed' : 'expanded');
    } else if (menuConfig[index] == 'expanded') {
      var slideEffect = new fx.Height(content, {duration: 300});
      Element.addClassName(block, 'expanded');
    } else if (menuConfig[index] == 'collapsed') {
      var slideEffect = new fx.Height(content, {duration: 300});
      slideEffect.hide();
      Element.addClassName(block, 'collapsed');
    } else {
      var slideEffect = null;
      Element.addClassName(block, 'static');
    }
    
    if (slideEffect) {
      title.onclick = function(event) {
        try { var element = Event.element(event); }
        catch(err) { var element = Event.element(window.event); }
        if (element.tagName != 'A') {
          slideEffect.toggle();
          toggleClass(this.parentNode, 'collapsed', 'expanded');
        }
      }
    }
  });
  
  var clientLogin = $('clientlogin');
  if (clientLogin) {
    clientLogin.onclick = function() {
      var slideEffect = new fx.Height('loginform', {duration: 250});
      slideEffect.toggle();
      toggleClass(this, 'collapsed', 'expanded');
      return false;
    }
  }

  var details = $('details');
  if (details) {
    details.onclick = function() {
      var slideEffect = new fx.Height('details_form', {duration: 250});
      slideEffect.toggle();
      return false;
    }
  }

}

if (!/Opera\/9.00/.test(navigator.userAgent)) {
Event.observe(window, 'load', menu_transitions);
}