# HG changeset patch
# User Giulio Moro <giuliomoro@yahoo.it>
# Date 1461955230 -3600
# Node ID 9e7c56327d9cb6c46d177259ae89d6bcb1badf71
# Parent  2cc0088b7461ba3e6da595f334b2ebb45ca7461d
Check for popup.hideNextButton and popup.hidePreviousButton before hiding them

diff -r 2cc0088b7461 -r 9e7c56327d9c js/core.js
--- a/js/core.js	Fri Apr 29 19:26:21 2016 +0100
+++ b/js/core.js	Fri Apr 29 19:40:30 2016 +0100
@@ -469,8 +469,12 @@
 		popup.showPopup();
 		popup.popupContent.innerHTML = null;
 		popup.popupContent.textContent = "Submitting. Please Wait";
-        popup.hideNextButton();
-        popup.hidePreviousButton();
+		if(typeof(popup.hideNextButton) === "function"){
+			popup.hideNextButton();
+		}
+		if(typeof(popup.hidePreviousButton) === "function"){
+			popup.hidePreviousButton();
+		}
 	}
 }