/* =========================================================

// 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)
*  }); 
*

// ========================================================= */
var previous = 0;
var inntimer = '';
(function($) {

  $.fn.innerfade = function(options) {
    return this.each(function() {
      $.innerfade(this, options);
    });
  };

  $.innerfade = function(container, options) {
    var settings = {
      'animationtype': 'fade',
      'speed': 'normal',
      'type': 'sequence',
      'timeout': 2000,
      'containerheight': 'auto',
      'runningclass': 'innerfade',
      'children': null
    };



    if (options)
      $.extend(settings, options);
    if (settings.children === null)
      var elements = $(container).children();
    else
      var elements = $(container).children(settings.children);


    if (elements.length > 1) {



      $(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
      for (var i = 0; i < elements.length; i++) {
        var a = i + 1;
        $(elements[i]).css('z-index', String(elements.length - i)).css('position', 'absolute').hide();
        $(".innerfade-holder .buttons").append("<a class='paginering_knop' href='javascript:void(null);' id='el" + i + "'>" + a + "</a>");
        $('#el' + i).bind('click', function() {
          $.innerfade.ganaar(elements, settings, this);
          return false;
        });

      };
      $('#el0').addClass("active");
      if (settings.type == "sequence") {
        inntimer = setTimeout(function() {
          $.innerfade.next(elements, settings, 1, 0);
        }, settings.timeout);
        $(elements[0]).show();
      } else if (settings.type == "random") {
        var last = Math.floor(Math.random() * (elements.length));
        inntimer = setTimeout(function() {
          do {
            current = Math.floor(Math.random() * (elements.length));
          } while (last == current);
          $.innerfade.next(elements, settings, current, last);
        }, settings.timeout);
        $(elements[last]).show();
      } else if (settings.type == 'random_start') {
        settings.type = 'sequence';
        var current = Math.floor(Math.random() * (elements.length));
        inntimer = setTimeout(function() {
          $.innerfade.next(elements, settings, (current + 1) % elements.length, current);
        }, settings.timeout);
        $(elements[current]).show();
      } else {
        alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
      }
    }
  };

  $.innerfade.ganaar = function(elements, settings, el) {

    i = parseInt(el.id.replace("el", ""));
    current = i;
    //      if ((current + 1) < elements.length) {
    //          current = current + 1;
    //          last = current - 1;
    //      } else {
    //          current = 0;
    //          last = elements.length - 1;
    //      }
    last = previous;
    if (current != last) {
      clearTimeout(inntimer);
      $.innerfade.next(elements, settings, current, last, true);
    }
  }

  $.innerfade.next = function(elements, settings, current, last, faster) {

    //  alert(current);
    for (var i = 0; i < elements.length; i++) {

      $('#el' + i).removeClass("active");
    }
    $('#el' + current).addClass("active");

    if (settings.animationtype == 'slide') {
      $(elements[last]).slideUp(settings.speed);
      $(elements[current]).slideDown(settings.speed);
    } else if (settings.animationtype == 'fade') {
      $(elements[last]).fadeOut(settings.speed);
      $(elements[current]).fadeIn(settings.speed, function() {
        removeFilter($(this)[0]);
      });
    } else
      alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
    if (settings.type == "sequence") {
      if ((current + 1) < elements.length) {
        current = current + 1;
        last = current - 1;
      } else {
        current = 0;
        last = elements.length - 1;
      }
    } else if (settings.type == "random") {
      last = current;
      while (current == last)
        current = Math.floor(Math.random() * elements.length);
    } else
      alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
    previous = last;
    inntimer = setTimeout((function() {
      $.innerfade.next(elements, settings, current, last);
    }), settings.timeout);
  };

})(jQuery);

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