var SS_CURRENTID = 0;
var SS_CURRENTDIV = null;

var Slideshow = {
	
	fnHideCurrent: function() {
		if (SS_CURRENTDIV != null) {
			SS_CURRENTDIV.hide();
		}
	},

	fnCheckButtons: function() {
		$('prev').show();
		$('next').show();
		if (SS_CURRENTID == 1) {
			$('prev').hide();
			if (SS_TOTAL == 1) {
				$('next').hide();	
			}
		} else if (SS_CURRENTID == SS_TOTAL) {
			$('next').hide();
		}
	},

	fnNext: function() {	
		if (SS_CURRENTID < SS_TOTAL) {
			Slideshow.fnHideCurrent();
			SS_CURRENTID++;
			SS_CURRENTDIV = $('im'+SS_CURRENTID);
			SS_CURRENTDIV.show();
		}
		Slideshow.fnCheckButtons();
		Slideshow.fnWriteZoom();
	},

	fnPrev: function() {	
		if (SS_CURRENTID > 1) {
			Slideshow.fnHideCurrent();
			SS_CURRENTID--;
			SS_CURRENTDIV = $('im'+SS_CURRENTID);
			SS_CURRENTDIV.show();
		}
		Slideshow.fnCheckButtons();
		Slideshow.fnWriteZoom();
	},
	
	fnZoom: function() {
		Lightbox.prototype.start($('a'+SS_CURRENTID));
	},
	
	fnWriteZoom: function() {
		var d = $('slideshow-controls-zoom');
		d.update('<a href="'+SS_PATH+SS_CURRENTID+'_large.jpg" rel="lightbox['+SS_NAME+']" class="exclude-from-lightbox"><span class="icon"><img src="images/btn-enlarge.gif" border="0" /></span><span class="text">zoom</span></a>');
	}

} <!-- Slideshow -->

Slideshow.fnNext();