/* 
 * Simple jQuery Bildergalerie.
 * http://www.queness.com/post/152/simple-jquery-image-slide-show-with-semi-transparent-caption
 * 
 */


jQuery(document).ready(function() {

    //Execute the slideShow
    slideShow();

});

function slideShow() {

    //Set the opacity of all images to 0
    jQuery('#gallery a').css({
        opacity: 0.0
    });

    //Get the first image and display it (set it to full opacity)
    jQuery('#gallery a:first').css({
        opacity: 1.0
    });

    //Set the caption background to semi-transparent
    jQuery('#gallery .caption').css({
        opacity: 0.7
    });

    //Resize the width of the caption according to the image width
    jQuery('#gallery .caption').css({
        width: jQuery('#gallery a').find('img').css('width')
        });
/********************
 * rel - Zeigt die Beschreibung zum Bild an

    //Get the caption of the first image from REL attribute and display it
    jQuery('#gallery .imgcontent').html(jQuery('#gallery a:first').find('img').attr('rel'))
    .animate({
        opacity: 1.0
    }, 400);
*********************/

    //Call the gallery function to run the slideshow, 4000 = change to next image after 4 seconds
    setInterval('gallery()',4000);

}

function gallery() {

    //if no IMGs have the show class, grab the first image
    var current = (jQuery('#gallery a.show')?  jQuery('#gallery a.show') : jQuery('#gallery a:first'));

    //Get next image, if it reached the end of the slideshow, rotate it back to the first image
    var next = ((current.next().length) ? ((current.next().hasClass('caption'))? jQuery('#gallery a:first') :current.next()) : jQuery('#gallery a:first'));

/********************
 * rel - Zeigt die Beschreibung zum Bild an

    //Get next image caption
    var caption = next.find('img').attr('rel');
 *********************/

    //Set the fade in effect for the next image, show class has higher z-index
    next.css({
        opacity: 0.0
    })
    .addClass('show')
    .animate({
        opacity: 1.0
    }, 1000);

    //Hide the current image
    current.animate({
        opacity: 0.0
    }, 1000)
    .removeClass('show');

    //Set the opacity to 0 and height to 1px
    jQuery('#gallery .caption').animate({
        opacity: 0.0
    }, {
        queue:false,
        duration:0
    }).animate({
        height: '1px'
    }, {
        queue:true,
        duration:300
    });

    //Animate the caption, opacity to 0.5 and heigth to 17px, a slide up effect
    jQuery('#gallery .caption').animate({
        opacity: 0.5
    },100 ).animate({
        height: '17px'
    },500 );

    //Display the imgcontent
    //jQuery('#gallery .imgcontent').html(caption);

}