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

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

		if(options)
		{
			jQuery.extend(settings, options);
		}

		if(settings.children === null)
		{
			var elements = jQuery(container).children();
		}
		else
		{
			var elements = jQuery(container).children(settings.children);
		}

		if(elements.length > 1)
		{
			jQuery(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
			for(var i = 0; i < elements.length; i++)
			{
				jQuery(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
			};
			if(settings.type == "sequence")
			{
				setTimeout(function()
				{
					jQuery.innerfade.next(elements, settings, 1, 0);
				}, settings.timeout);
				jQuery(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);
					jQuery.innerfade.next(elements, settings, current, last);
				}, settings.timeout);
				jQuery(elements[last]).show();
			}
			else if(settings.type == 'random_start')
			{
				settings.type = 'sequence';
				var current = Math.floor(Math.random() * (elements.length));
				setTimeout(function()
				{
					jQuery.innerfade.next(elements, settings, (current + 1) %  elements.length, current);
				}, settings.timeout);
				jQuery(elements[current]).show();
			}
			else
			{
				alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
			}
		}
	};

	jQuery.innerfade.next = function(elements, settings, current, last)
	{
		if(settings.animationtype == 'slide')
		{
			jQuery(elements[last]).slideUp(settings.speed);
			jQuery(elements[current]).slideDown(settings.speed);
		}
		else if(settings.animationtype == 'fade')
		{
			jQuery(elements[last]).fadeOut(settings.speed);
			jQuery(elements[current]).fadeIn(settings.speed, function()
			{
				removeFilter(jQuery(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()
		{
			jQuery.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');
	}
}