diff --git a/public_html/gmap.html b/public_html/gmap.html
index 33b082e..f62d063 100644
--- a/public_html/gmap.html
+++ b/public_html/gmap.html
@@ -5,7 +5,7 @@
 		<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
 		<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
 		<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
-		<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?sensor=false&amp;libraries=geometry"></script>
+		<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?libraries=geometry"></script>
 		<script type="text/javascript" src="config.js"></script>
 		<script type="text/javascript" src="markers.js"></script>
 		<script type="text/javascript" src="dbloader.js"></script>
@@ -42,7 +42,7 @@
 		</div>
 		<div id="sidebar_container">
 			<div id="sidebar_canvas">
-				<div id="timestamps" style="align: center">
+				<div id="timestamps">
 					<table width="100%">
                                           <tr>
 					    <td align="center"> <canvas id="utcclock"></canvas> </td>
@@ -72,7 +72,7 @@
                                         <b id="infoblock_name">DUMP1090</b>
                                       </td>
                                       <td align="right">
-                                        <a href="https://github.com/mutability/dump1090" id="dump1090_version" target="_blank"></span>
+                                        <a href="https://github.com/mutability/dump1090" id="dump1090_version" target="_blank"></a>
                                       </td>
                                     </tr>
 
@@ -146,7 +146,7 @@
 
                                     <tr class="infoblock_body">
                                       <td>Track: <span id="selected_track">n/a</span></td>
-	                              <td>Last seen: <span id="selected_seen">n/a</span</td>
+	                              <td>Last seen: <span id="selected_seen">n/a</span></td>
                                     </tr>
 
                                     <tr class="infoblock_body">
@@ -161,6 +161,7 @@
 				<div id="planes_table">
 	                          <table id="tableinfo" width="100%">
 	                            <thead style="background-color: #BBBBBB; cursor: pointer;">
+                                 <tr>
 	                              <td id="icao" onclick="sortByICAO();">ICAO</td>
                                       <td id="flag" onclick="sortByCountry()"><!-- column for flag image --></td>
 				      <td id="flight" onclick="sortByFlight();">Flight</td>
@@ -171,6 +172,7 @@
                                       <td id="track" onclick="sortByTrack();" align="right">Track</td>
 	                              <td id="msgs" onclick="sortByMsgs();" align="right">Msgs</td>
 	                              <td id="seen" onclick="sortBySeen();" align="right">Age</td>
+                                 </tr>
                                     </thead>
                                     <tbody>
                                       <tr id="plane_row_template" class="plane_table_row hidden">
diff --git a/public_html/script.js b/public_html/script.js
index ce21e36..823f228 100644
--- a/public_html/script.js
+++ b/public_html/script.js
@@ -894,10 +894,11 @@ function resetMap() {
 function drawCircle(marker, distance) {
     if (typeof distance === 'undefined') {
         return false;
-        
-        if (!(!isNaN(parseFloat(distance)) && isFinite(distance)) || distance < 0) {
-            return false;
-        }
+    }
+
+    distance = parseFloat(distance);
+    if (isNaN(distance) || !isFinite(distance) || distance < 0) {
+        return false;
     }
     
     distance *= 1000.0;