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

// jquery.innerfade.js

// Datum: 2007-01-29
// Firma: Medienfreunde Hofmann & Baldes GbR
// Autor: 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/

// ========================================================= */
(function($)
{
	$.fn.innerfade = function(options)
	{
		this.each(function()
		{
			var settings =
			{
				animationtype: 'fade',
				speed: 'slow',
				timeout: 4000,
				type: 'random',
				containerheight: 'auto',
				runningclass: 'innerfade'
			};
			if(options)
			{
				$.extend(settings, options);
			}
			var elements = $(this).children();
			if (elements.length > 1)
			{
				$(this).css('position', 'relative');
				$(this).css('height', settings.containerheight);
				$(this).addClass(settings.runningclass);
				for ( var i = 0; i < elements.length; i++ )
				{
					$(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute');
					$(elements[i]).hide();
				};
				if ( settings.type == 'sequence' )
				{
					setTimeout(function()
					{
						$.innerfade.next(elements, settings, 1, 0);
					}
					, settings.timeout);
					$(elements[0]).show();
				}
				else if ( settings.type == 'random' )
				{
					setTimeout(function()
					{
						do
						{
							current = Math.floor ( Math.random ( ) * ( elements.length ) );
						}
						while ( current == 0 )
						$.innerfade.next(elements, settings, current, 0);
					}
					, settings.timeout);
					$(elements[0]).show();
				}
				else
				{
					alert('type must either be \'sequence\' or \'random\'');
				}
			}
		});
	};
	$.innerfade = function()
	{

	}
	$.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);
		}
		else
		{
			alert('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('type must either be \'sequence\' or \'random\'');
		};
		setTimeout((function()
		{
			$.innerfade.next(elements, settings, current, last);
		}
		), settings.timeout);
	};
})(jQuery);