var startsignal = 0;
var global_pause = 0;
var global_direction = 'forward';
var global_interrupt = 0;
var global_delay = 0;
var global_getimage = -1;
var slideshow = Class.create();
slideshow.prototype = {
  initialize: function(element, data, delay, preflist, pause){
    this.element = element;
    this.data = data;
    this.delay = delay;
    this.preflist = preflist;
    global_pause = pause;
    this.currentItem = 0;
    this.lastItem = 0;
    this.maxItem = 0;
    this.init = 1;
    this.timelock = 1;
    this.slideElements = Array();
    for(i = 0; i < data.length; i++){
      var currentImg = document.createElement('div');
      currentImg.style.position = "absolute";
      if (data[i][2]){
        var articleLink = document.createElement('a');
        articleLink.href = data[i][2];
        var showImg = document.createElement('img');
        showImg.style.border = "none";
        showImg.src = data[i][0];
        articleLink.appendChild(showImg);
        currentImg.appendChild(articleLink);
      }
      else{
        var showImg = document.createElement('img');
        showImg.style.border = "none";
        showImg.src = data[i][0];
        currentImg.appendChild(showImg);
      }
      element.appendChild(currentImg);
      currentImg.currentOpacity = new fx.Opacity(currentImg, {duration: 2000});
      currentImg.setStyle('opacity', 0);
      this.slideElements[parseInt(i)] = currentImg;
    }
    this.maxItem = data.length;
    this.doSlideShow();
  },
  startSlideShow: function(){
    if (this.init == 1){
      this.lastItem = this.maxItem - 1;
      this.currentItem = 0;
      this.init = 0;
      this.slideElements[parseInt(this.currentItem)].setStyle('opacity', 1);
      setTimeout(this.showInfoSlideShow.bind(this));
    }
    if (startsignal) setTimeout(this.nextSlideShow.bind(this));
    else setTimeout(this.startSlideShow.bind(this), 100);
  },
  nextSlideShow: function(){
    if ((global_pause == 0) && (this.timelock <= 0)){
      if (this.timelock == 0){
        setTimeout(this.nextSlideShow.bind(this), 2000);
        setTimeout(this.hideInfoSlideShow.bind(this));
        this.timelock = -1;
      }
      else{
        this.timelock = 1;
        this.lastItem = this.currentItem;
        if (global_interrupt) this.preflist = undefined; global_interrupt = 0;
        if (this.preflist > 0){
          if (global_direction == 'forward') this.currentItem = (this.currentItem < this.preflist) ? this.currentItem + 1 : 0;
          else this.currentItem = (this.currentItem == 0) ? this.preflist : this.currentItem - 1;
        }
        else{
          if (global_direction == 'forward') this.currentItem = (this.currentItem < this.maxItem - 1) ? this.currentItem + 1 : 0;
          else this.currentItem = (this.currentItem == 0) ? this.maxItem - 1 : this.currentItem - 1;
        }
        if (global_getimage > -1){
          if (global_getimage != this.lastItem){
            if      ((global_getimage < this.lastItem) && (global_direction == 'forward'))   this.reverseImg = 1;
            else if ((global_getimage > this.lastItem) && (global_direction == 'backwards')) this.reverseImg = 1;
            this.currentItem = global_getimage;
          }
          global_getimage = -1;
        }
        setTimeout(this.doSlideShow.bind(this));
      }
    }
    else{
      if (this.timelock){
        if (this.timelock == 1){
          this.timelock = 2;
          var active_delay = this.delay;
          if (global_delay) active_delay = global_delay; global_delay = 0;
          this.timelockTimer = setTimeout(this.setTimelock.bind(this), (active_delay - 2000));
        }
        if ((global_interrupt) || (global_getimage > -1)){
          clearTimeout(this.timelockTimer);
          this.timelock = 0;
        }
      }
      setTimeout(this.nextSlideShow.bind(this), 100);
    }
  },
  setTimelock: function(){ this.timelock = 0; },
  doSlideShow: function(){
    if (this.init == 1) setTimeout(this.startSlideShow.bind(this));
    else{
      if (global_direction == 'forward'){
        if ((this.currentItem != 0) && (!this.reverseImg)){
          this.slideElements[parseInt(this.currentItem)].currentOpacity.options.onComplete = function(){
            this.slideElements[parseInt(this.lastItem)].setStyle('opacity', 0);
            if (window.prepare_hotelView) rotatehotel();
          }.bind(this);
          this.slideElements[parseInt(this.currentItem)].currentOpacity.custom(0, 1);
        }
        else{
          this.reverseImg = 0;
          this.slideElements[parseInt(this.currentItem)].setStyle('opacity', 1);
          this.slideElements[parseInt(this.lastItem)].currentOpacity.options.onComplete = function(){
            if (window.prepare_hotelView) rotatehotel();
          }.bind(this);
          this.slideElements[parseInt(this.lastItem)].currentOpacity.custom(1, 0);
        }
      }
      else{
        if ((this.currentItem != this.maxItem - 1) && (!this.reverseImg)){
          this.slideElements[parseInt(this.currentItem)].setStyle('opacity', 1);
          this.slideElements[parseInt(this.lastItem)].currentOpacity.options.onComplete = function(){
            if (window.prepare_hotelView) rotatehotel();
          }.bind(this);
          this.slideElements[parseInt(this.lastItem)].currentOpacity.custom(1, 0);
        }
        else{
          this.reverseImg = 0;
          this.slideElements[parseInt(this.currentItem)].currentOpacity.options.onComplete = function(){
            this.slideElements[parseInt(this.lastItem)].setStyle('opacity', 0);
            if (window.prepare_hotelView) rotatehotel();
          }.bind(this);
          this.slideElements[parseInt(this.currentItem)].currentOpacity.custom(0, 1);
        }
      }
      setTimeout(this.showInfoSlideShow.bind(this));
      setTimeout(this.nextSlideShow.bind(this));
    }
  },
  showInfoSlideShow: function(){
    if (this.slideInfo) this.element.removeChild(this.slideInfo);
    this.slideInfo = document.createElement('div');
    this.slideInfo.className = "image_text";
    this.slideInfo.style.top = "268px";
    this.slideInfo.style.width = "438px";
    this.slideInfo.currentOpacity = new fx.Opacity(this.slideInfo, {duration: 2000});
    this.slideInfo.setStyle('opacity', 0);
    if (this.data[this.currentItem][2]){
      var imgText = document.createElement('a');
      imgText.className = "title_text";
      imgText.innerHTML = this.data[this.currentItem][1];
      imgText.href = this.data[this.currentItem][2];
    }
    else{
      var imgText = document.createElement('div');
      imgText.className = "title_text";
      imgText.innerHTML = this.data[this.currentItem][1];
    }
    this.slideInfo.appendChild(imgText);
    this.element.appendChild(this.slideInfo);
    this.slideInfo.currentOpacity.custom(0, 0.75);
  },
  hideInfoSlideShow: function(){
    if (!global_pause) this.slideInfo.currentOpacity.custom(0.75, 0);
  }
}

function loadImage(imageid, no_interrupt){
  if (document.getElementById('movie')) document.getElementById('movie').style.visibility = 'hidden';
  global_delay = 15000;
  global_pause = 0;
  if (!no_interrupt) global_interrupt = 1;
  global_getimage = imageid;
}

function playback_button(){
  if (window.prepare_hotelView) playback_button_map();
  global_pause = 0;
  global_interrupt = 1;
  global_direction = 'backwards';
}

function pause_button(){
  global_pause = 1;
}

function play_button(){
  if (window.prepare_hotelView) play_button_map();
  global_pause = 0;
  global_interrupt = 1;
  global_direction = 'forward';
}