css change, and now handles a slide being removed better

index.html

 
 	._content .fullscreen {
 		position: absolute;
-		width: auto;
+		width: 100%;
 		height: 100%;
 		top: 0px;
 		left: 50%;
 		-webkit-transform: translateX(-50%);
 		transform: translateX(-50%);
 	}
+	._content img.fullscreen {
+		width: auto;
+	}
 
 	#_overlay {
 		transition: opacity {{transition_time}}s;

server.js

 		sendfile(res, pathlib.join(dir, name));
 	}
 
+	self.dirExists = function() {
+		try {
+			fs.accessSync(dir, fs.F_OK);
+			return true;
+		} catch (err) {
+			return false;
+		}
+	}
+
 	return self;
 }
 
 			slideIndex += 1;
 
 			// Go to the next slide, or restart
-			if (slideIndex >= slides.length) {
+			if ((slideIndex >= slides.length)
+			||  (!slides[slideIndex].dirExists())) {
 				clearInterval(interval);
 				init();
 			} else {