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

var elements;
var last = 0;
var settings;
var showTeaser = 0;

(function($) {

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

  $.innerfade = function(container, options) {
    settings = {
  		'animationtype':    'fade',
      'speed':            'normal',
      'type':             'sequence',
      'timeout':          2000,
      'containerheight':  'auto',
      'runningclass':     'innerfade',
      'children':         null,
      'stopped':          false,
      'menuContainer':    false
    };
    if (options) {
      $.extend(settings, options);
    }
    if (settings.children === null) {
      elements = $(container).children();
    }
    else {
      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++) {
          $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
      };
      if (settings.type == "sequence") {
        setTimeout(function() {
          $.innerfade.next(elements, settings, 1, 0);
        }, settings.timeout);
        $(elements[0]).show();
      }
      else if (settings.type == "random") {
    		last = Math.floor ( Math.random () * ( elements.length ) );
        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 ) );
			setTimeout(function() {
				$.innerfade.next(elements, settings, (current + 1) %  elements.length, current);
			}, settings.timeout);
			$(elements[current]).show();
		}

		$( settings.menuContainer + " li a" ).each(
    	function( intIndex ){
    		$( this ).bind (
      	  "click",
      	  function() {
      	    $.innerfade.show(intIndex);
      	    showTeaser = this.id;
      	    showTeaser = intIndex;
      	    $( settings.menuContainer + " li a" ).each(
              function(intIndex) {
                if(intIndex == showTeaser) {
                  $(this).addClass("active");
                }
                else {
                  $(this).removeClass("active");
                }
            });
      	  }
      	);
      });
    }
	}

  $.innerfade.show = function(current) {
    $( settings.menuContainer + " li a" ).each(
      function(intIndex) {
        if($(this).attr("class") == "active") {
          last = intIndex;
        }
    });
    settings.stopped = false;
    $.innerfade.next(elements, settings, current, last);
    settings.stopped = true;
  }

  $.innerfade.next = function(elements, settings, current, last) {
    if(settings.stopped) {
      return;
    }
    else {
      $( settings.menuContainer + " li a" ).each(
        function(intIndex) {
          if(intIndex == current) {
            $(this).addClass("active");
          }
          else {
            $(this).removeClass("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]);
				});
      }

      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);
      }

      setTimeout((function() {
          $.innerfade.next(elements, settings, current, last);
      }), settings.timeout);
    }
  };
})(jQuery);

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