From e784b529a842b0d42b318133ba8e5d78ae8da878 Mon Sep 17 00:00:00 2001
From: Carlos Salaverria <carlos.salaverria@flightaware.com>
Date: Mon, 12 Sep 2016 16:06:25 -0500
Subject: [PATCH] Fix JavaScript errors when receiver position is not set

---
 public_html/script.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/public_html/script.js b/public_html/script.js
index 656eeeb..b12d2a0 100644
--- a/public_html/script.js
+++ b/public_html/script.js
@@ -427,7 +427,7 @@ function initialize_map() {
                 sortByDistance();
         } else {
 	        SitePosition = null;
-                PlaneRowTemplate.cells[6].style.display = 'none'; // hide distance column
+                PlaneRowTemplate.cells[9].style.display = 'none'; // hide distance column
                 document.getElementById("distance").style.display = 'none'; // hide distance header
                 sortByAltitude();
         }
@@ -1282,7 +1282,7 @@ function onDisplayUnitsChanged(e) {
     refreshSelected();
 
     // Redraw range rings
-    if (SiteCircleFeatures) {
+    if (SitePosition !== null && SitePosition !== undefined && SiteCircles) {
         createSiteCircleFeatures();
     }