/* =========================================================
 // 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);
        
        var elements = $(container).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', '0').css('position', 'absolute').hide();
            };
            $(elements[0]).css('z-index', '1');
            
            
            setTimeout(function(){
                $.innerfade.next(elements, settings, 1, 0);
            }, settings.timeout);
            
            
        }
    };
    
    $.innerfade.next = function(elements, settings, current, last){
    
        $(elements[last]).css('z-index', '1');
        $(elements[last]).css('display','none');
        
         setTimeout(function(){
               void(0);
            },2000);
        
        $(elements[current]).css('z-index', '2');
        
        $(elements[current]).fadeIn(1000);
        
        for (var i = 0; i < elements.length; i++) {
            if (i != current && i != last) {
                $(elements[i]).css('z-index', '0');
            }
        };
        
        
        
        if ((current + 1) < elements.length) {
            current = current + 1;
            last = current - 1;
        }
        else {
            current = 0;
            last = elements.length - 1;
        }
        
        setTimeout((function(){
            $.innerfade.next(elements, settings,  current, last);
        }), settings.timeout);
    };
    
})(jQuery);