diff --git a/index.html b/index.html
index ee82245..5db2c1c 100644
--- a/index.html
+++ b/index.html
@@ -361,8 +361,8 @@
 						</div>
 
 						<ul class="nav nav-tabs" id="putTabs">
-							<li class="active"><a href="#txoutputs" data-toggle="tab">Outputs <small>(<span id="totalOutput">0.0000</span>)</small></a></li>
-							<li><a href="#txinputs" data-toggle="tab">Inputs <small>(<span id="totalInput">0.0000</span>)</small></a></li>
+							<li class="active"><a href="#txoutputs" data-toggle="tab">Outputs <small>(<span id="totalOutput">0.00000000</span>)</small></a></li>
+							<li><a href="#txinputs" data-toggle="tab">Inputs <small>(<span id="totalInput">0.00000000</span>)</small></a></li>
 						</ul>
 
 						<br>
@@ -687,6 +687,7 @@
 
 				<div class="modal-body" align="center">
 					<select id="videoSource" class="form-control"></select>
+					<div id="videoReaderError" class="hidden">Your browser does not offer camera support</div>
 					<video id="videoReader" muted autoplay style="width:100%;height:100%"></video>
 					<div id="qrcode-scanner-callback-to" class="hidden"></div>
 				</div>
diff --git a/js/coinbin.js b/js/coinbin.js
index 0ddad87..bded4db 100644
--- a/js/coinbin.js
+++ b/js/coinbin.js
@@ -415,71 +415,69 @@ $(document).ready(function() {
 
 	/* code for the qr code scanner */
 
-	function gotSources(sourceInfos) {
-		for (var i = 0; i !== sourceInfos.length; ++i) {
-			var sourceInfo = sourceInfos[i];
-			var option = document.createElement('option');
-			option.value = sourceInfo.id;
-			if (sourceInfo.kind === 'video') {
-				option.text = sourceInfo.label || 'camera ' + ($("select#videoSource options").length + 1);
-				$(option).appendTo("select#videoSource");
- 			}
-		}
-	}
-
-	if (typeof MediaStreamTrack === 'undefined'){
-		return alert('This browser does not support MediaStreamTrack.\n\nTry Chrome Canary.');
-	} else {
-		MediaStreamTrack.getSources(gotSources);
-	}
-
-	function videoStart(){
-
-		navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
-
-		if (!!window.stream) {
-			$("video").attr('src',null);
-			window.stream.stop();
-  		}
-
-		var videoSource = $("select#videoSource").val()
-		var constraints = {
-			video: {
-				optional: [{sourceId: videoSource}]
-			}
-		};
-		navigator.getUserMedia(constraints, function(stream){
-			window.stream = stream; // make stream available to console
-			var videoElement = document.querySelector('video');
-			videoElement.src = window.URL.createObjectURL(stream);
-			videoElement.play();
-		}, function(error){ });
-
-		QCodeDecoder().decodeFromCamera(document.getElementById('videoReader'), function(er,data){
-			if(!er){
-				var r = '';
-				var match = data.match(/^bitcoin\:(.*)\??$/i);
-				if(match){
-					r = match[1];
-				} else {
-					r = data;
-				}
-
-				$(""+$("#qrcode-scanner-callback-to").html()).val(r);
-				$("#qrScanClose").click();
-			}
-		});
-	}
-
 	$(".qrcodeScanner").click(function(){
-		$("select#videoSource").change(function(){
+		if ((typeof MediaStreamTrack === 'function') && typeof MediaStreamTrack.getSources === 'function'){
+			MediaStreamTrack.getSources(function(sourceInfos){
+				var f = 0;
+				$("select#videoSource").html("");
+				for (var i = 0; i !== sourceInfos.length; ++i) {
+					var sourceInfo = sourceInfos[i];
+					var option = document.createElement('option');
+					option.value = sourceInfo.id;
+					if (sourceInfo.kind === 'video') {
+						option.text = sourceInfo.label || 'camera ' + ($("select#videoSource options").length + 1);
+						$(option).appendTo("select#videoSource");
+ 					}
+				}
+			});
+		} else {
+			$("#videoSource").addClass("hidden");
+		}
+
+		$("#videoSource").unbind("change").change(function(){
 			videoStart()
 		});
-		videoStart();
 
+		videoStart();
 		$("#qrcode-scanner-callback-to").html($(this).attr('forward-result'));
 	});
 
+	function videoStart(){
+		navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || false;
+		if(navigator.getUserMedia){
+			if (!!window.stream) {
+				$("video").attr('src',null);
+				window.stream.stop();
+  			}
+
+			var videoSource = $("select#videoSource").val();
+			var constraints = {
+				video: {
+					optional: [{sourceId: videoSource}]
+				}
+			};
+
+			navigator.getUserMedia(constraints, function(stream){
+				window.stream = stream; // make stream available to console
+				var videoElement = document.querySelector('video');
+				videoElement.src = window.URL.createObjectURL(stream);
+				videoElement.play();
+			}, function(error){ });
+
+			QCodeDecoder().decodeFromCamera(document.getElementById('videoReader'), function(er,data){
+				if(!er){
+					var match = data.match(/^bitcoin\:([13][a-z0-9]{26,33})/i);
+					var result = match ? match[1] : data;
+					$(""+$("#qrcode-scanner-callback-to").html()).val(result);
+					$("#qrScanClose").click();
+				}
+			});
+		} else {
+			$("#videoReaderError").removeClass("hidden");
+			$("#videoReader, #videoSource").addClass("hidden");
+		}
+	}
+
 	$("#redeemFromBtn").click(function(){
 		var thisbtn = this;
 		var addr = '';