From ab4107bd5384de79c39e9e290babe377df1ecf2a Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam.soltys@pwgsc-tpsgc.gc.ca>
Date: Wed, 24 Oct 2012 16:12:47 -0700
Subject: Hide QR when amount is blank

---
 css/bitcoin_pos.css |  1 +
 js/bitcoin_pos.js   | 14 ++++++++------
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/css/bitcoin_pos.css b/css/bitcoin_pos.css
index f6b80f58..4eb97575 100644
--- a/css/bitcoin_pos.css
+++ b/css/bitcoin_pos.css
@@ -6,6 +6,7 @@ span.btn { font-size: 1.4em; width: 80%; }
 small, label { color: #999; font-size: 1.2em; }
 strong#total { font-size: 2em; }
 img#banner { width: 100%; }
+div#payment { display: none; }
 	
 div.container-fluid {
   margin-left: auto;
diff --git a/js/bitcoin_pos.js b/js/bitcoin_pos.js
index f05407d3..396a371e 100644
--- a/js/bitcoin_pos.js
+++ b/js/bitcoin_pos.js
@@ -22,20 +22,22 @@ $(function() {
   $('#amount').keyup(updateTotal);
   $('#amount').focus();
   $('#amount').focus(function() {
-    $('#payment').show();
     $('#received').hide();
-    $('#total').html('0');
     $(this).val('');
+    updateTotal();
   });
 
   function updateTotal() {
     var amount = parseFloat($('#amount').val());
     var total = amount / exchange;
     total = Math.ceil(total * 10000) / 10000;
-    if (!$.isNumeric(total)) total = '';
-    $('#total').html(total.toString());
-
-    displayQR('bitcoin:' + address + '?amount=' + total.toString());
+    if (!$.isNumeric(total) || total == 0) {
+      $('#payment').fadeOut('slow');
+    } else {
+      $('#payment').fadeIn('slow');
+      $('#total').html(total.toString());
+      displayQR('bitcoin:' + address + '?amount=' + total.toString());
+    }
   }
 
   function setupSocket() {
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