Show error when there are no images

images.html

@@ -183,9 +183,14 @@
 
 		  $.get(targeturl(), 'text')
 			.done(function(html) {
-			  parseFilenamesFromHtml(html).forEach(function(filename) {
-				$('#images').append(template({filename: filename}));
-			  });
+			  var filenames = parseFilenamesFromHtml(html)
+			  if (filenames.length) {
+				filenames.forEach(function(filename) {
+				  $('#images').append(template({filename: filename}));
+				});
+			  } else {
+				handleError('no images found');
+			  }
 			})
 			.fail(function(error) {
 			  handleError(error);