/*  Prototype JavaScript framework
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *
 *  For details, see the Prototype web site: http://prototype.conio.net/
 *
/*--------------------------------------------------------------------------*/


//note: this is a stripped down version of prototype, to be used with moo.fx by mad4milk (http://moofx.mad4milk.net).

var Class = {
  create: function() {
    return function() { 
      this.initialize.apply(this, arguments);
    }
  }
}

Object.extend = function(destination, source) {
  for (property in source) {
    destination[property] = source[property];
  }
  return destination;
}

Function.prototype.bind = function(object) {
  var __method = this;
  return function() {
    return __method.apply(object, arguments);
  }
}

function $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1) 
      return element;

    elements.push(element);
  }

  return elements;
}

//-------------------------

document.getElementsByClassName = function(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = new Array();
  
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    var classNames = child.className.split(' ');
    for (var j = 0; j < classNames.length; j++) {
      if (classNames[j] == className) {
        elements.push(child);
        break;
      }
    }
  }
  
  return elements;
}

//-------------------------

if (!window.Element) {
  var Element = new Object();
}

Object.extend(Element, {
  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
  },

  hasClassName: function(element, className) {
    element = $(element);
    if (!element)
      return;
    var a = element.className.split(' ');
    for (var i = 0; i < a.length; i++) {
      if (a[i] == className)
        return true;
    }
    return false;
  },

  addClassName: function(element, className) {
    element = $(element);
    Element.removeClassName(element, className);
    element.className += ' ' + className;
  },
  
  removeClassName: function(element, className) {
    element = $(element);
    if (!element)
      return;
    var newClassName = '';
    var a = element.className.split(' ');
    for (var i = 0; i < a.length; i++) {
      if (a[i] != className) {
        if (i > 0)
          newClassName += ' ';
        newClassName += a[i];
      }
    }
    element.className = newClassName;
  },
  
  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    for (var i = 0; i < element.childNodes.length; i++) {
      var node = element.childNodes[i];
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) 
        Element.remove(node);
    }
  }
});

/*
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).
10/24/2005
v(1.0.2)
*/

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

	go: function() {
		this.duration = this.options.duration;
		this.startTime = (new Date).getTime();
		this.timer = setInterval (this.step.bind(this), 13);
	},

	step: function() {
		var time  = (new Date).getTime();
		var Tpos   = (time - this.startTime) / (this.duration);
		if (time >= this.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 {
			this.now = ((-Math.cos(Tpos*Math.PI)/2) + 0.5) * (this.to-this.from) + this.from;
			//this time-position, sinoidal transition thing is from script.aculo.us
		}
		this.increase();
	},

	custom: function(from, to) {
		if (this.timer != null) return;
		this.from = from;
		this.to = to;
		this.go();
	},

	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.el.iniWidth = this.el.offsetWidth;
		this.el.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.el.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) this.now = 0.9999;
		if (this.now > 0 && this.el.style.visibility == "hidden") this.el.style.visibility = "visible";
		if (this.now == 0) this.el.style.visibility = "hidden";
		if (window.ActiveXObject) this.el.style.filter = "alpha(opacity=" + this.now*100 + ")";
		this.el.style.opacity = this.now;
	},

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

/*
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).
Wednesday, November 16, 2005
v1.0.4
*/

//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, calls Width and Height alltogheter
fx.Resize = Class.create();
fx.Resize.prototype = {
	initialize: function(el, options) {
		this.h = new fx.Height(el, options); 
		if (options) options.onComplete = null;
		this.w = new fx.Width(el, options);
		this.el = $(el);
	},

	toggle: function(){
		this.h.toggle();
		this.w.toggle();
	},

	modify: function(hto, wto) {
		this.h.custom(this.el.offsetHeight, this.el.offsetHeight + hto);
		this.w.custom(this.el.offsetWidth, this.el.offsetWidth + wto);
	},

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

	hide: function(){
		this.h.hide();
		this.w.hide();
	}
}

//composition effect, calls Opacity and (Width and/or Height) alltogheter
fx.FadeSize = Class.create();
fx.FadeSize.prototype = {
	initialize: function(el, options) {
		this.el = $(el);
		this.el.o = new fx.Opacity(el, options);
		if (options) options.onComplete = null;
		this.el.h = new fx.Height(el, options);
		this.el.w = new fx.Width(el, options);
	},

	toggle: function() {
		this.el.o.toggle();
		for (var i = 0; i < arguments.length; i++) {
			if (arguments[i] == 'height') this.el.h.toggle();
			if (arguments[i] == 'width') this.el.w.toggle();
		}
	},

	hide: function(){
		this.el.o.hide();
		for (var i = 0; i < arguments.length; i++) {
			if (arguments[i] == 'height') this.el.h.hide();
			if (arguments[i] == 'width') this.el.w.hide();
		}
	}
}

//intended to work with arrays.
var Multi = new Object();
Multi = function(){};
Multi.prototype = {
	initialize: function(elements, options){
		this.options = options;
		this.el = this.getElementsFromArray(elements);
		for (i=0;i<this.el.length;i++){
			this.effect(this.el[i]);
		}
	},

	getElementsFromArray: function(array) {
		var elements = new Array();
		for (i=0;i<array.length;i++) { 
			elements.push($(array[i])); 
		}
		return elements;
	}
}

//Fadesize with arrays
fx.MultiFadeSize = Class.create();
fx.MultiFadeSize.prototype = Object.extend(new Multi(), {
	effect: function(el){
		el.fs = new fx.FadeSize(el, this.options);
	},

	showThisHideOpen: function(el, delay, mode){
		for (i=0;i<this.el.length;i++){
			if (this.el[i].offsetHeight > 0 && this.el[i] != el && this.el[i].h.timer == null && el.h.timer == null){
				this.el[i].fs.toggle(mode);
				setTimeout(function(){el.fs.toggle(mode);}.bind(el), delay);
			}
			
		}
	},

	hide: function(el, mode){
		el.fs.hide(mode);
	}
});

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;i < ca.length;i++) {
			var c = ca[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';
	}
});


//use to attach effects without using js code, just classnames and rel attributes.
ParseClassNames = Class.create();
ParseClassNames.prototype = {
	initialize: function(options){
		var babies = document.getElementsByTagName('*') || document.all;
		for (var i = 0; i < babies.length; i++) {
			var el = babies[i];
			//attach the effect, from the classNames;
			var effects = this.getEffects(el);
			for (var j = 0; j < effects.length; j++) {
				if (j == 1 && options) options.onComplete = null;
				el[effects[j]+"fx"] = new fx[effects[j]](el, options);
			}
			//execute methods, from rel
			if (el.rel) {
				el.crel = el.rel.split(' ');
				if (el.crel[0].indexOf("fx_") > -1) {
					var event = el.crel[0].replace('fx_', '');
					var tocompute = this.getEffects($(el.crel[1]));
					el["on"+event] = function(){
						for (var f = 0; f < tocompute.length; f++) {
							$(this.crel[1])[tocompute[f]+"fx"][this.crel[2] || "toggle"](this.crel[3] || null, this.crel[4] || null);
						}
					}
				}
			}
		}
	},

	getEffects: function(el){
		var effects = new Array();
		var css = el.className.split(' ');
		for (var i = 0; i < css.length; i++) {
			if (css[i].indexOf('fx_') > -1) {
				var effect = css[i].replace('fx_', '');
				effects.push(effect);
			}
		}
		return effects;
	}
}