galleria - handle just one image

galleria.onimage.click.js

// is a fix for this bug : http://code.google.com/p/galleria/issues/detail?id=62
onImage   : function(image,caption,thumb) {

                // fetch the thumbnail container
                var _li = thumb.parents('li');

                // count items
                var n = parseInt(_li.siblings().length);

                if (typeof n == 'undefined' || n == 0) {
                    // disable click behaviour
                    $.galleria.clickNext = false;
                }
                else if (typeof n == 'number' && n != 0){
                    // enable click behaviour
                    $.galleria.clickNext = true;
                    
                    // fade in the image & caption
                    if(! ($.browser.mozilla && navigator.appVersion.indexOf("Win")!=-1) ) { // FF/Win fades large images terribly slow
                        image.css('display','none').fadeIn(500);
                    }

                    // fade out inactive thumbnail
                    _li.siblings().children('img.selected').fadeTo(300,0.3);

                    // fade in active thumbnail
                    thumb.fadeTo('fast',1).addClass('selected');

                    // this will add a class to landscape images allowing extra margin
                    if (image.height() < image.width()) {
                        $('#galleriaContentBox').addClass('landscape');
                    } else {
                        $('#galleriaContentBox').removeClass('landscape');
                    }
                }
	},