/* =========================================================
 // jquery.innerfade.js
 // Datum: 2008-02-14
 // Firma: Medienfreunde Hofmann & Baldes GbR
 // Author: Torsten Baldes
 // Mail: t.baldes@medienfreunde.com
 // Web: http://medienfreunde.com
 // based on the work of Matt Oakes http://portfolio.gizone.co.uk/applications/slideshow/
 // and Ralf S. Engelschall http://trainofthoughts.org/
 *
 *  <ul id="news">
 *      <li>content 1</li>
 *      <li>content 2</li>
 *      <li>content 3</li>
 *  </ul>
 *
 *  $('#news').innerfade({
 *	  animationtype: Type of animation 'fade' or 'slide' (Default: 'fade'),
 *	  speed: Fading-/Sliding-Speed in milliseconds or keywords (slow, normal or fast) (Default: 'normal'),
 *	  timeout: Time between the fades in milliseconds (Default: '2000'),
 *	  type: Type of slideshow: 'sequence', 'random' or 'random_start' (Default: 'sequence'),
 * 		containerheight: Height of the containing element in any css-height-value (Default: 'auto'),
 *	  runningclass: CSS-Class which the container get’s applied (Default: 'innerfade'),
 *	  children: optional children selector (Default: null)
 *	 'slide_timer_on':	default slider is on like 'yes' but you stop auto play using 'no'
 *   'slide_ui_parent':	'news',
 *	 'slide_ui_text':	profilio text ul id
 *   'pause_button_id':  pause button id,
 *   'slide_nav_id':		slide navigation ul id
 *  });
 *
 // ========================================================= */
(function($){

  $.fn.innerfade = function(options){
    var settings;
    var elements;
    var elements_title;
    var curr_slide_id_number;
    var next_slide_id_number;
    return this.each(function(){
      $.innerfade(this, options);
    });
  };
  //control play and  pause functionality 
  jQuery.pause = function(){
    var elements = $("ul#" + settings.slide_ui_parent + " li");
    var isPlay = $("#" + settings.pause_button_id + " span").html();
    if (isPlay == "pause") {
      $("#" + settings.pause_button_id + " span").html("play");
      settings.slide_timer_on = 'no'
      $("#" + settings.pause_button_id).attr("class", "paused_button");
    }
    else {
      $("#" + settings.pause_button_id + " span").html("pause");
      settings.slide_timer_on = 'yes'
      $("#" + settings.pause_button_id).attr("class", "pause_button");
      button_class = $("#button_selected").attr("class");
      split_button_class_string = button_class.split("_");
      button_class_string = split_button_class_string.pop();
      curr_slide_id_number = parseFloat(button_class_string);
      next_slide_id_number = curr_slide_id_number - 1;
      ;
      setTimeout(function(){
        $.innerfade.next(elements, settings, curr_slide_id_number, next_slide_id_number);
      }, 0);
    }
    
  }
  
  // next button
  jQuery.next = function(){
    var elements = $("ul#" + settings.slide_ui_parent + " li");
    $("#" + settings.pause_button_id + " span").html("play");
    //alert("#"+settings.pause_button_id+"span");
    
    
    
    $("#" + settings.pause_button_id).attr("class", "paused_button");
    button_class = $("#button_selected").attr("class");
    split_button_class_string = button_class.split("_");
    button_class_string = split_button_class_string.pop();
    curr_slide_id_number = parseFloat(button_class_string) + 1;
    next_slide_id_number = curr_slide_id_number - 1;
    settings.slide_timer_on = 'no'
    
    if ((curr_slide_id_number) == elements.length) {
      curr_slide_id_number = 0;
    }
    $.skip();
  }
  
  // prev button
  jQuery.prev = function(){
    var elements = $("ul#" + settings.slide_ui_parent + " li");
    $("#" + settings.pause_button_id + " span").html("play");
    $("#" + settings.pause_button_id).attr("class", "paused_button");
    button_class = $("#button_selected").attr("class");
    split_button_class_string = button_class.split("_");
    button_class_string = split_button_class_string.pop();
    curr_slide_id_number = parseFloat(button_class_string) - 1;
    next_slide_id_number = curr_slide_id_number - 1;
    settings.slide_timer_on = 'no'
    if ((curr_slide_id_number) < 0) {
      curr_slide_id_number = elements.length - 1;
    }
    $.skip();
  }
  
  //first button
  jQuery.first = function(){
    $("#" + settings.pause_button_id + " span").html("play");
    $("#" + settings.pause_button_id).attr("class", "paused_button");
    curr_slide_id_number = 0;
    next_slide_id_number = curr_slide_id_number - 1;
    settings.slide_timer_on = 'no'
    $.skip();
    
  }
  
  //last button
  jQuery.last = function(){
    var elements = $("ul#" + settings.slide_ui_parent + " li");
    $("#" + settings.pause_button_id + " span").html("play");
    $("#" + settings.pause_button_id).attr("class", "paused_button");
    curr_slide_id_number = elements.length - 1;
    next_slide_id_number = curr_slide_id_number - 1;
    settings.slide_timer_on = 'no'
    $.skip();
    
  }
  
  
  
  
  //set options button click event
  jQuery.setOptionsButtonEvent = function(){
  
  
    $("#" + settings.slide_nav_id + " li").each(function(){
      // add click functionality to buttons
      
      $(this).click(function(){
      
        $("#" + settings.pause_button_id + " span").html("play");
        $("#" + settings.pause_button_id).attr("class", "paused_button");
        button_class = $(this).attr("class");
        split_button_class_string = button_class.split("_");
        button_class_string = split_button_class_string.pop();
        curr_slide_id_number = parseFloat(button_class_string);
        next_slide_id_number = curr_slide_id_number - 1;
        settings.slide_timer_on = 'no'
        $.skip();
        
      }); // click
    }); //each
  }
  
  
  $.innerfade = function(container, options){
    settings = {
      'animationtype': 'fade',
      'speed': 'normal',
      'type': 'sequence',
      'timeout': 5000,
      'containerheight': 'auto',
      'runningclass': 'innerfade',
      'children': null,
      'slide_timer_on': 'yes',
      'slide_ui_parent': null,
      'slide_ui_text': null,
      'pause_button_id': null,
      'slide_nav_id': null
    };
    var elements;
    var elements_title;
    if (options) 
      $.extend(settings, options);
    if (settings.children === null) 
      elements = $(container).children();
    else 
      elements = $(container).children(settings.children);
    if (elements.length > 1) {
      if (settings.slide_ui_text != 'null') {
        elements_title = $("ul#" + settings.slide_ui_text + " li")
      }
      
      $(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
      for (var i = 0; i < elements.length; i++) {
        $(elements[i]).css('z-index', String(elements.length - i)).css('position', 'absolute').hide();
        if (settings.slide_ui_text != 'null') {
          $(elements_title[i]).css('z-index', String(elements_title.length - i)).css('position', 'absolute').hide();
        }
      };
      if (settings.type == "sequence") {
        setTimeout(function(){
          $.innerfade.next(elements, settings, 1, 0);
        }, settings.timeout);
        $(elements[0]).show();
        if (settings.slide_ui_text != 'null') {
          $(elements_title[0]).show();
        }
        if (settings.slide_nav_id != 'null') {
          $("#" + settings.slide_nav_id + " li").removeAttr("id");
          $("#" + settings.slide_nav_id + " .slide_0").attr("id", "button_selected");
        }
        
      }
      else 
        if (settings.type == "random") {
          next_slide_id_number = Math.floor(Math.random() * (elements.length));
          setTimeout(function(){
            do {
              curr_slide_id_number = Math.floor(Math.random() * (elements.length));
            }
            while (next_slide_id_number == curr_slide_id_number);
            $.innerfade.next(elements, settings, curr_slide_id_number, next_slide_id_number);
          }, settings.timeout);
          $(elements[next_slide_id_number]).show();
          if (settings.slide_ui_text != 'null') {
            $(elements_title[next_slide_id_number]).show();
          }
        }
        else 
          if (settings.type == 'random_start') {
            settings.type = 'sequence';
            curr_slide_id_number = Math.floor(Math.random() * (elements.length));
            setTimeout(function(){
              $.innerfade.next(elements, settings, (curr_slide_id_number + 1) % elements.length, curr_slide_id_number);
            }, settings.timeout);
            
            $(elements[curr_slide_id_number]).show();
            
            if (settings.slide_ui_text != 'null') {
              $(elements_title[curr_slide_id_number]).show();
            }
            
          }
          else {
            alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
          }
    }
  };
  
  
  $.skip = function(){
  
  
    var elements = $("ul#" + settings.slide_ui_parent + " li");
    if (settings.slide_ui_text != 'null') {
      var elements_title = $("ul#" + settings.slide_ui_text + " li")
    }
    for (var i = 0; i < elements.length; i++) {
      if (settings.animationtype == 'fade') {
        $(elements[i]).fadeOut(settings.speed);
        if (settings.slide_ui_text != 'null') {
        
          $(elements_title[i]).fadeOut(settings.speed);
        }
      }
      else {
        $(elements[i]).slideUp(settings.speed);
        if (settings.slide_ui_text != 'null') {
        
          $(elements_title[i]).slideUp(settings.speed);
        }
      }
      
    }
    if (settings.animationtype == 'fade') {
      $(elements[curr_slide_id_number]).fadeIn(settings.speed, function(){
        removeFilter($(this)[0]);
      });
      if (settings.slide_ui_text != 'null') {
        $(elements_title[curr_slide_id_number]).fadeIn(settings.speed, function(){
          removeFilter($(this)[0]);
        });
      }
    }
    else {
      $(elements[curr_slide_id_number]).slideDown(settings.speed, function(){
        removeFilter($(this)[0]);
      });
      if (settings.slide_ui_text != 'null') {
        $(elements_title[curr_slide_id_number]).slideDown(settings.speed, function(){
          removeFilter($(this)[0]);
        });
      }
      
    }
    if (settings.slide_nav_id != 'null') {
      $("#" + settings.slide_nav_id + " li").removeAttr("id");
      $("#" + settings.slide_nav_id + " .slide_" + curr_slide_id_number).attr("id", "button_selected");
    }
    
    
  } //skip
  $.innerfade.next = function(elements, settings, curr_slide_id_number, next_slide_id_number){
    var elements_title;
    if (settings.slide_ui_text != 'null') {
      elements_title = $("ul#" + settings.slide_ui_text + " li");
    }
    
    if (settings.slide_timer_on == 'yes') {
    
      //alert(elements.length+"yes");
      if (settings.animationtype == 'slide') {
        $(elements[next_slide_id_number]).slideUp(settings.speed);
        $(elements[curr_slide_id_number]).slideDown(settings.speed);
        
        $(elements[next_slide_id_number]).slideUp(settings.speed);
        if (settings.slide_ui_text != 'null') {
          $(elements_title[next_slide_id_number]).slideUp(settings.speed);
        }
        $(elements[curr_slide_id_number]).slideDown(settings.speed, function(){
          removeFilter($(this)[0]);
        });
        if (settings.slide_ui_text != 'null') {
          $(elements_title[curr_slide_id_number]).slideDown(settings.speed, function(){
            removeFilter($(this)[0]);
          });
        }
        if (settings.slide_nav_id != 'null') {
          $("#" + settings.slide_nav_id + " li").removeAttr("id");
          $("#" + settings.slide_nav_id + " .slide_" + curr_slide_id_number).attr("id", "button_selected");
        }
      }
      else 
        if (settings.animationtype == 'fade') {
          $(elements[next_slide_id_number]).fadeOut(settings.speed);
          if (settings.slide_ui_text != 'null') {
            $(elements_title[next_slide_id_number]).fadeOut(settings.speed);
          }
          $(elements[curr_slide_id_number]).fadeIn(settings.speed, function(){
            removeFilter($(this)[0]);
          });
          if (settings.slide_ui_text != 'null') {
            $(elements_title[curr_slide_id_number]).fadeIn(settings.speed, function(){
              removeFilter($(this)[0]);
            });
          }
          if (settings.slide_nav_id != 'null') {
            $("#" + settings.slide_nav_id + " li").removeAttr("id");
            $("#" + settings.slide_nav_id + " .slide_" + curr_slide_id_number).attr("id", "button_selected");
          }
        }
        else 
          alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
      
      if (settings.type == "sequence") {
      
        //alert(curr_slide_id_number);
        if ((curr_slide_id_number + 1) < elements.length) {
        
          //alert(curr_slide_id_number);
          curr_slide_id_number = curr_slide_id_number + 1;
          next_slide_id_number = curr_slide_id_number - 1;
          //alert(curr_slide_id_number+"if");
        }
        else {
          //alert(curr_slide_id_number+"else");
          curr_slide_id_number = 0;
          next_slide_id_number = elements.length - 1;
        }
        
      }
      else 
        if (settings.type == "random") {
          next_slide_id_number = curr_slide_id_number;
          while (curr_slide_id_number == next_slide_id_number) 
            curr_slide_id_number = Math.floor(Math.random() * elements.length);
        }
        else 
          alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
      
      
      setTimeout((function(){
        $.innerfade.next(elements, settings, curr_slide_id_number, next_slide_id_number);
      }), settings.timeout);
      
      //	alert(curr_slide_id_number);
    };
      }
  
  
  
  
})(jQuery);

// **** remove Opacity-Filter in ie ****
function removeFilter(element){
  if (element.style.removeAttribute) {
    element.style.removeAttribute('filter');
  }
}