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

// 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)
 *  }); 
 *

// ========================================================= */
var previous = 0;
var inntimer = '';
(function($) {

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

$.innerfade = function(container, options) {
	var settings = {
		'animationtype':    'fade',
		'speed':            'normal',
		'originalspeed':    'normal', 
		'type':             'sequence',
		'timeout':          2000,
		'containerheight':  'auto',
		'runningclass':     'innerfade',
		'buttonclass':     	null,
		'children':         'li',
		'play':             'yes'
	};
	
	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').addClass(settings.runningclass);
		for (var i = 0; i < elements.length; i++) {
			$(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
			$(container).parent('div').find(settings.buttonclass).css('z-index', String(elements.length+1)).append('<a href="#" id="item' + i + '" class="button"><span>' + parseInt(i+1) + '</span></a>');		
		};
		
		var buttons = $(container).parent('div').find(settings.buttonclass).children();
		
		for (var i = 0; i < elements.length; i++) {
			$(buttons[i]).mouseenter(function(){
				settings.play = 'yes';
				settings.originalspeed = settings.speed;
				settings.speed = 250;
				$.innerfade.ganaar(elements, buttons, settings, this);
				settings.play = 'no';
			});
			
			$(buttons[i]).mouseleave(function(){
				settings.play = 'yes';
				settings.speed = settings.originalspeed;
			});
		};
		
		if (settings.type == "sequence") {
			inntimer = setTimeout(function() {
				$.innerfade.next(elements, buttons, settings, 1, 0);
			}, settings.timeout);
			$(elements[0]).show();
			$(buttons[0]).addClass("active");
		} else if (settings.type == "random") {
			var last = Math.floor(Math.random()*(elements.length));
			inntimer = setTimeout(function() {
				do { 
					current = Math.floor ( Math.random ( ) * ( elements.length ) );
				} while (last == current );             
					$.innerfade.next(elements, buttons, settings, current, last);
			}, settings.timeout);
			$(elements[last]).show();
			$(buttons[last]).addClass("active");
		} else if ( settings.type == 'random_start' ) {
			settings.type = 'sequence';
			var current = Math.floor ( Math.random () * ( elements.length ) );
			inntimer = setTimeout(function(){
				$.innerfade.next(elements, buttons, settings, (current + 1) %  elements.length, current);
			}, settings.timeout);
				$(elements[current]).show();
			} else {
				alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
			}
		}
	};

	$.innerfade.ganaar = function(elements, buttons, settings, button) {
		i = parseInt($(button).attr('id').replace('item', ''));
		current = i;
		last = previous;
		if(current != last) {
			clearTimeout(inntimer);
			$.innerfade.next(elements, buttons, settings, current, last, true);
		}
	}

	$.innerfade.next = function(elements, buttons, settings, current, last,faster) {
		if (settings.play == 'yes') {
			for (var i = 0; i < buttons.length; i++) {
				$(buttons[i]).removeClass("active"); 
			}

			// SSA 20-okt-2009: Stop roulatie functionaliteit toegevoegd volgens NHL Todo 034.
			if ($(buttons[current]).hasClass('stop_roulatie')) {
			  settings.play = 'no';
			}
	
			if (settings.animationtype == 'slide') {
				$(elements[last]).slideUp(settings.speed);
				$(elements[current]).slideDown(settings.speed);
				$(buttons[current]).addClass("active"); 
			} else if (settings.animationtype == 'fade') {
				$(elements[last]).fadeOut(settings.speed);
				$(elements[current]).fadeIn(settings.speed, function() {
					removeFilter($(this)[0]);
				});
				$(buttons[current]).addClass("active"); 
			} 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\'');
			}
			
			previous = last;
			inntimer = setTimeout((function() {
				$.innerfade.next(elements, buttons, settings, current, last);
			}), settings.timeout);
		}
	};
})(jQuery);

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