// =========================================================
// jq-innerfade.js
// Datum: 2006-09-01
// Firma: Medienfreunde Hofmann & Baldes GbR
// Autor: 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/
// =========================================================
$.fn.innerfade = function(options) {
    return this.each(function(){
        var settings = {
            speed: 'normal',
            timeout: 2000,
            type: 'sequence',
            containerheight: 'auto'
        }
        //Stop IE flicker
        if ($.browser.msie == true) {
            document.execCommand('BackgroundImageCache', false, true);
        }
        //Stop IE flicker
        if(options)
            $.extend(settings, options);
        var elements = $(this).children().get();
        if (elements.length > 1) {
            $(this).parent().css('position', 'relative');
            $(this).css('height', settings.containerheight);
            for ( var i = 0; i < elements.length; i++ ) {
                $(elements[i]).css('z-index', elements.length - i).css('position', 'absolute');
                $(elements[i]).hide();
            }   
            if ( settings.type == 'sequence' ) {
                setTimeout(function(){
                    $.innerfade.next(elements, settings, 1, 0);
                }, settings.timeout);
                $(elements[0]).show();
            }
            else if ( settings.type == 'random' ) {
                setTimeout(function(){
                    do { current = Math.floor ( Math.random ( ) * ( elements.length ) ); } while ( current == 0 )
                    $.innerfade.next(elements, settings, current, 0);
                }, settings.timeout);
                $(elements[0]).show();
            }
            else {
                alert('type must either be \'sequence\' or \'random\'');
            }
        }
    });
};
$.innerfade = function() {}
$.innerfade.next = function (elements, settings, current, last) {
    $(elements[last]).fadeOut(settings.speed);
    $(elements[current]).fadeIn(settings.speed);
    if ( settings.type == 'sequence' ) {
        if ( ( current + 1 ) < elements.length ) {
            current = current + 1;
            last = current - 1;
        }
        else {
            current = 0;
            last = elements.length - 1;
        }
    }
    else if ( settings.type == 'random' ) {
        last = current;
        while ( current == last ) {
            current = Math.floor ( Math.random ( ) * ( elements.length ) );
        }
    }
    else {
        alert('type must either be \'sequence\' or \'random\'');
    }
    setTimeout((function(){$.innerfade.next(elements, settings, current, last);}), settings.timeout);
}