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

// jquery.innerfade.js
// Datum: 2008-02-14
// Firma: Medienfreunde Hofmann & Baldes GbR
// Author: Torsten Baldes
// Modified By: jaya@x-team.com (add some navigation function)
// 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 timeAnimate=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,
			'nav': 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', 'absolute').hide();
			};
			if (settings.type == "sequence") {
				timeAnimate = 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));
				timeAnimate = 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));
				timeAnimate = 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\'');
			}
		}
	};

	$.fn.innernext = function(objNav, elements, options) {
		var settings = {
			'animationtype': 'fade',
			'speed': 'normal',
			'type': 'sequence',
			'timeout': 2000,
			'containerheight': 'auto',
			'runningclass': 'innerfade',
			'children': null,
			'nav': null
		};
		if (options)
			$.extend(settings, options);
		var no = parseInt(objNav.id.replace(/noNavRot/g, ''));
		var last = no - 1;
		if (last < 0) last = elements.length - 1;
		var current = no;
		return this.each(function() {
			$.innerfade.next(elements, settings, current, last);
		});
	};

	$.innerfade.next = function(elements, settings, current, last) {
		if (timeAnimate) {
			clearTimeout(timeAnimate);
			timeAnimate = null;
		}
		if (settings.animationtype == 'slide') {
			$(elements[last]).slideUp(settings.speed);
			$(elements[current]).slideDown(settings.speed);
		} else if (settings.animationtype == 'fade') {
			if (settings.nav !== null) {
				var elementsNav = settings.nav.children();
				for (var i = 0; i < elementsNav.length; i++) {
					if (elementsNav[i].style.background == '#32afaf') {
						last = i;
						break;
					}
				}
				$(elementsNav[last]).css({ background: '#fff', color: '#323232' });
				$(elementsNav[current]).css({ background: '#32afaf', color: '#fff' });
			}
			$(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\'');
		timeAnimate = 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');
	}
}