$(document).ready(function() { //perform actions when DOM is ready
function getMaxZimgAlt(zelement) {
mz = 29;
$(zelement).each(function() {
tz = $(this).css('z-index');
if(tz==mz) {
me = $(this).attr('alt');
}
});
return me;
}
var z = 0; //for setting the initial z-index's
var inAnimation = false; //flag for testing if we are in a animation
var imgLoaded = 0; //for checking if all images are loaded
$('#gallery').append('Bitte kurz warten. Die Bilder werden geladen.
'); //append the loader div, it overlaps all pictures
$('#pictures').append('
');
// $('#pictures').fadeOut('slow');
$('#pictures img').each(function() { //set the initial z-index's
z++; //at the end we have the highest z-index value stored in the z variable
$(this).css('z-index', z); //apply increased z-index to ![]()
$(new Image()).attr('src', $(this).attr('src')).load(function() { //create new image object and have a callback when it's loaded
imgLoaded++; //one more image is loaded
//alert(imgLoaded);
if(imgLoaded==29) { //do we have all pictures loaded?
// $('#pictures').fadeOut('slow');
$('#loader').fadeOut('slow'); //if so fade out the loader div
$('#loader').css('display','none');
$('#imgdesc').empty();
$('#imgdesc').append('1. Platz: Alina O., 7 Jahre');
}
});
});
function swapFirstLast(isFirst) {
if(inAnimation) return false; //if already swapping pictures just return
else inAnimation = true; //set the flag that we process a image
var processZindex, direction, newZindex, inDeCrease; //change for previous or next image
if(isFirst) {
//set variables for "next" action
processZindex = z;
direction = '-';
newZindex = 1;
inDeCrease = 1;
} else {
//set variables for "previous" action
processZindex = 1;
direction = '';
newZindex = z;
inDeCrease = -1;
}
$('#pictures img').each(function() { //process each image
if($(this).css('z-index') == processZindex) { //if its the image we need to process
$(this).animate({ 'top' : direction + $(this).height() + 'px' }, 'slow', function() { //animate the img above/under the gallery (assuming all pictures are equal height)
$(this).css('z-index', newZindex) //set new z-index
.animate({ 'top' : '0' }, 'slow', function() { //animate the image back to its original position
inAnimation = false; //reset the flag
});
if(direction == '') {
$('#imgdesc').empty();
$('#imgdesc').append($(this).attr('alt'));
} else {
$('#imgdesc').empty();
if($(this).attr('alt')=='28. Platz: Romy B., 6 Jahre') {
$('#imgdesc').append('1. Platz: Alina O., 7 Jahre');
} else {
$('#imgdesc').append(getMaxZimgAlt('#pictures img'));
}
}
});
} else { //not the image we need to process, only in/de-crease z-index
$(this).animate({ 'top' : '0' }, 'slow', function() { //make sure to wait swapping the z-index when image is above/under the gallery
$(this).css('z-index', parseInt($(this).css('z-index')) + inDeCrease); //in/de-crease the z-index by one
});
}
});
return false; //don't follow the clicked link
}
$('#nexta a').click(function() {
swapFirstLast(true);
return false; //don't follow the clicked link
});
$('#prev a').click(function() {
swapFirstLast(false);
return false; //don't follow the clicked link
});
});