diff --git a/lib/ComicBook.js b/lib/ComicBook.js
index 7e65398..fb1694d 100755
--- a/lib/ComicBook.js
+++ b/lib/ComicBook.js
@@ -751,6 +751,9 @@ function ComicBook(id, srcs, opts) {
 
 	ComicBook.prototype.navigation = function (e) {
 
+		// disable navigation when the overlay is showing
+		if ($("#cb-loading-overlay").is(":visible")) { return false; }
+
 		var side = false;
 
 		switch (e.type) {