Galleria+jCarousel+ajax issues

$('ul.gallery_show').galleria({
    history   : true, // activates the history object for bookmarking, back-button etc.
    clickNext : true, // helper for making the image clickable
    insert    : '#main_image', // the containing selector for our main image
    onImage   : function(image, caption, thumb) {
        onImageGalleria(image, caption, thumb);
    },
    onThumb   : function(thumb) {
        onThumbGalleria(thumb);
    }
});

function onImageGalleria(image, caption, thumb){ // let's add some image effects for demonstration purposes
                
    // fade in the image & caption
    image.css('display','none').fadeIn(200);
    caption.css('display','none').fadeIn(200);
                
    // fetch the thumbnail container
    var _li = thumb.parents('li');
        
    // fade out inactive thumbnail
    _li.siblings().children('img.selected').fadeTo(100,0.6);
        
    // fade in active thumbnail
    thumb.fadeTo('fast',1).addClass('selected');
                
    // add a title for the clickable image
    image.attr('title','Next panel >>');
                
        $('#main_image').trigger('img_change');
};
    
function onThumbGalleria(thumb){ // thumbnail effects goes here
                
    // fetch the thumbnail container
    var _li = thumb.parents('li');
    // if thumbnail is active, fade all the way.
        var _fadeTo = _li.is('.active') ? '1' : '0.6';
                
    // fade in the thumbnail when finished loading
    thumb.css({display:'none',opacity:_fadeTo}).fadeIn(500);
                
    // hover effects
    thumb.hover(
        function() { thumb.fadeTo('fast',1); },
        function() { _li.not('.active').children('img').fadeTo('fast',0.6); } // don't fade out if the parent is active
        )
};