diff --git a/public_html/gmap.html b/public_html/gmap.html
index 76be3e1..b3f6cd4 100644
--- a/public_html/gmap.html
+++ b/public_html/gmap.html
@@ -1,3 +1,4 @@
+<!DOCTYPE HTML>
 <html>
 	<head>
 		<meta charset="utf-8"/>
@@ -21,7 +22,7 @@
 	
 	<body onload="initialize()">
 		<div id="loader" class="hidden">
-			<img src="spinny.gif" id="spinny">
+			<img src="spinny.gif" id="spinny" alt="Loading...">
 			<progress id="loader_progress"></progress>
 		</div>
 
@@ -46,23 +47,23 @@
 		<div id="sidebar_container">
 			<div id="sidebar_canvas">
 				<div id="timestamps">
-					<table width="100%">
+					<table style="width: 100%">
 						<tr>
-							<td align="center"> <canvas id="utcclock"></canvas> </td>
-							<td align="center"> <canvas id="receiverclock"></canvas> </td>
+							<td style="text-align: center"> <canvas id="utcclock"></canvas> </td>
+							<td style="text-align: center"> <canvas id="receiverclock"></canvas> </td>
 						</tr>
 
 						<tr>
-							<td align="center">UTC</td>
-							<td align="center">Last Update</td>
+							<td style="text-align: center">UTC</td>
+							<td style="text-align: center">Last Update</td>
 						</tr>
 					</table>
 				</div> <!-- timestamps -->
 				
 				<div id="sudo_buttons">
-					<table width="100%">
+					<table style="width: 100%">
 						<tr>
-							<td width="150" style="text-align: center;" class="pointer">
+							<td style="width: 150px; text-align: center;" class="pointer">
 								[ <span onclick="resetMap();">Reset Map</span> ]
 							</td>
 						</tr>
@@ -70,12 +71,12 @@
 				</div> <!-- sudo_buttons -->
 
 				<div id="dump1090_infoblock">
-					<table width="100%">
+					<table style="width: 100%">
 						<tr class="infoblock_heading">
 							<td>
 								<b id="infoblock_name">DUMP1090</b>
 							</td>
-							<td align="right">
+							<td style="text-align: right">
 								<a href="https://github.com/mutability/dump1090" id="dump1090_version" target="_blank"></a>
 							</td>
 						</tr>
@@ -108,16 +109,16 @@
 				</div> <!-- dump1090_infoblock -->
 
 				<div id="selected_infoblock" class="hidden">
-					<table width="100%">
+					<table style="width: 100%">
 						<tr class="infoblock_heading">
 							<td colspan="2">
 								<b>
 									<span id="selected_callsign" onclick="toggleFollowSelected();" class="pointer">n/a</span>
 								</b>
-								<span id="selected_follow" onclick="toggleFollowSelected();" class="pointer">&#x21D2</span>
+								<span id="selected_follow" onclick="toggleFollowSelected();" class="pointer">&#x21D2;</span>
 
 								<span id="selected_flag">
-									<img width="20" height="12">
+									<img style="width: 20px; height=12px" src="about:blank" alt="Flag">
 								</span>
 
 								<a href="http://www.airframes.org/" onclick="document.getElementById('horrible_hack').submit.call(document.getElementById('airframes_post')); return false;">
@@ -140,8 +141,8 @@
 						</tr>
 
 						<tr class="infoblock_body">
-							<td width="55%">Altitude: <span id="selected_altitude"></span></td>
-							<td width="45%">Squawk: <span id="selected_squawk"></span></td>
+							<td style="width: 55%">Altitude: <span id="selected_altitude"></span></td>
+							<td style="width: 45%">Squawk: <span id="selected_squawk"></span></td>
 						</tr>
 
 						<tr class="infoblock_body">
@@ -165,33 +166,33 @@
 				</div> <!-- selected_infoblock -->
 
 				<div id="planes_table">
-					<table id="tableinfo" width="100%">
+					<table id="tableinfo" style="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>
-								<td id="squawk" onclick="sortBySquawk();" align="right">Squawk</td>
-								<td id="altitude" onclick="sortByAltitude();" align="right">Altitude</td>
-								<td id="speed" onclick="sortBySpeed();" align="right">Speed</td>
-								<td id="distance" onclick="sortByDistance();" align="right">Distance</td>
-								<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>
+								<td id="squawk" onclick="sortBySquawk();" style="text-align: right">Squawk</td>
+								<td id="altitude" onclick="sortByAltitude();" style="text-align: right">Altitude</td>
+								<td id="speed" onclick="sortBySpeed();" style="text-align: right">Speed</td>
+								<td id="distance" onclick="sortByDistance();" style="text-align: right">Distance</td>
+								<td id="track" onclick="sortByTrack();" style="text-align: right">Track</td>
+								<td id="msgs" onclick="sortByMsgs();" style="text-align: right">Msgs</td>
+								<td id="seen" onclick="sortBySeen();" style="text-align: right">Age</td>
 							</tr>
 						</thead>
 						<tbody>
 							<tr id="plane_row_template" class="plane_table_row hidden">
 								<td>ICAO</td>
-								<td><img width="20" height="12"></td>
+								<td><img style="width: 20px; height=12px" src="about:blank" alt="Flag"></td>
 								<td>FLIGHT</td>
-								<td align="right">SQUAWK</td>
-								<td align="right">ALTITUDE</td>
-								<td align="right">SPEED</td>
-								<td align="right">DISTANCE</td>
-								<td align="right">TRACK</td>
-								<td align="right">MSGS</td>
-								<td align="right">SEEN</td>
+								<td style="text-align: right">SQUAWK</td>
+								<td style="text-align: right">ALTITUDE</td>
+								<td style="text-align: right">SPEED</td>
+								<td style="text-align: right">DISTANCE</td>
+								<td style="text-align: right">TRACK</td>
+								<td style="text-align: right">MSGS</td>
+								<td style="text-align: right">SEEN</td>
 							</tr>
 						</tbody>
 					</table>

n/a - ⇒ + ⇒ - + @@ -140,8 +141,8 @@
Altitude:	Squawk:	Altitude:	Squawk:
ICAO		Flight	Squawk	Altitude	Speed	Distance	Track	Msgs	Age	Squawk	Altitude	Speed	Distance	Track	Msgs	Age
ICAO			FLIGHT	SQUAWK	ALTITUDE	SPEED	DISTANCE	TRACK	MSGS	SEEN	SQUAWK	ALTITUDE	SPEED	DISTANCE	TRACK	MSGS	SEEN