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



// 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);

        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") {

                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 ) );

                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 ) );

								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\'');

						}

				}

    };



    $.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, 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\'');

        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');

	}

}

