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

// 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>
 *  
 *  jQuery('#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)
 *  });
 *

// ========================================================= */
jQuery.noConflict();
(function(jQuery) {

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

    jQuery.innerfade = function(container, options) {
        var settings = {
            'animationtype':    'fade',
            'speed':            'normal',
            'type':             'sequence',
            'timeout':          2000,
            'containerheight':  'auto',
            'runningclass':     'innerfade',
            'children':         null
        };
        if (options)
            jQuery.extend(settings, options);
        if (settings.children === null)
            var ifElements = jQuery(container).children();
        else
            var ifElements = jQuery(container).children(settings.children);
        if (ifElements.length > 1) {
            jQuery(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
            for (var i = 0; i < ifElements.length; i++) {
                jQuery(ifElements[i]).css('z-index', String(ifElements.length-i)).css('position', 'absolute').hide();
            };
            if (settings.type == "sequence") {
                setTimeout(function() {
                    jQuery.innerfade.next(ifElements, settings, 1, 0);
                }, settings.timeout);
                jQuery(ifElements[0]).show();
            } else if (settings.type == "random") {
                var last = Math.floor ( Math.random () * ( ifElements.length ) );
                setTimeout(function() {
                    do {
                        current = Math.floor ( Math.random ( ) * ( ifElements.length ) );
                    } while (last == current );             
                    jQuery.innerfade.next(ifElements, settings, current, last);
                }, settings.timeout);
                jQuery(ifElements[last]).show();
            } else if ( settings.type == 'random_start' ) {a
                settings.type = 'sequence';
                var current = Math.floor ( Math.random () * ( ifElements.length ) );
                setTimeout(function(){
                  jQuery.innerfade.next(ifElements, settings, (current + 1) %  ifElements.length, current);
                }, settings.timeout);
                jQuery(ifElements[current]).show();
            }  else {
              alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
            }
        }
    };

    jQuery.innerfade.next = function(ifElements, settings, current, last) {
        if (settings.animationtype == 'slide') {
            jQuery(ifElements[last]).slideUp(settings.speed);
            jQuery(ifElements[current]).slideDown(settings.speed);
        } else if (settings.animationtype == 'fade') {
            jQuery(ifElements[last]).fadeOut(settings.speed);
            jQuery(ifElements[current]).fadeIn(settings.speed, function() {
              removeFilter(jQuery(this)[0]);
            });
        } else
            alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
        if (settings.type == "sequence") {
            if ((current + 1) < ifElements.length) {
                current = current + 1;
                last = current - 1;
            } else {
                current = 0;
                last = ifElements.length- 1;
            }
        } else if (settings.type == "random") {
            last = current;
            while (current == last)
                current = Math.floor(Math.random() * ifElements.length);
        } else
            alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
        setTimeout((function() {
            jQuery.innerfade.next(ifElements, settings, current, last);
        }), settings.timeout);
    };

})(jQuery);

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