/*
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() {
    if(isNaN(this.now)){this.now = 1;};
    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;
  }
}

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

    scrollTo: function(el){
        var desty = Position.cumulativeOffset($(el));
        var dest = desty[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);
    }
});

var Position = {
  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return [valueL, valueT];
  }
}


var ScrollLinks = {
    currentHash: false,
    start: function(){
        this.scroll = new fx.Scroll({duration: 800, onComplete: function(){ScrollLinks.end();}});
        this.allinks = document.getElementsByTagName('a');
        for (i=0; i<this.allinks.length; i++){
            var lnk = this.allinks[i];
            if ((lnk.href && lnk.href.indexOf('#') != -1) && ( (lnk.pathname == location.pathname) || ('/'+lnk.pathname == location.pathname) ) && (lnk.search == location.search)) {
                lnk.onclick = function(){
                    ScrollLinks.scroll.clearTimer();
                    this.initialHref = this.href;
                    this.initialHash = this.hash;
                    this.href = "javascript:void(0)";
                    setTimeout(function(){this.href = this.initialHref;}.bind(this), 200);
                    ScrollLinks.click(this);
                }
            }
        }
    },

    click: function(link){
        this.currentHash = link.initialHash.substr(1);
        if (this.currentHash) {
            for (j=0; j<this.allinks.length; j++){
                if (this.allinks[j].id == this.currentHash){
                    if (!window.opera) this.scroll.scrollTo(this.allinks[j]);
                    else this.scroll.scrollTo(this.allinks[j].parentNode);
                    break;
                }
            }
        }
    },

    end: function(){
        window.location.href = "#"+this.currentHash;
        this.currentHash = false;
    }
}