/* =========================================================
// 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>
 *
 *  $('#news').innerfade({
 *	  animationtype: Type of animation 'fade' or 'slide' (Default: 'fade'),
 *	  speed: Fading-/Sliding-Speed in milliseconds or keywords (slow, normal or fast) (Default: 'normal'),
 *	  timeout: Time between the fades in milliseconds (Default: '2000'),
 *	  type: Type of slideshow: 'sequence', 'random' or 'random_start' (Default: 'sequence'),
 * 		containerheight: Height of the containing element in any css-height-value (Default: 'auto'),
 *	  runningclass: CSS-Class which the container get¡¯s applied (Default: 'innerfade'),
 *	  children: optional children selector (Default: null)
 *  });
 *
// ========================================================= */
(function($) {
    $.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++) {
    $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'relative').hide();
};
if (settings.type == "sequence") {
    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 ) );
    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();
						}	else {
							alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
						}
				}
    };
    $.innerfade.next = function(elements, settings, current, last) {
  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\'');
  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');
	}
}