add invalid funds message on grouporder page

app/assets/javascripts/ordering.js

@@ -180,16 +180,12 @@ function updateBalance() {
     $('#new_balance').html(I18n.l("currency", balance));
     $('#total_balance').val(I18n.l("currency", balance));
     // determine bgcolor and submit button state according to balance
-    var bgcolor = '';
     if (balance < minimumBalance) {
-        bgcolor = '#FF0000';
         $('#submit_button').attr('disabled', 'disabled')
+        $('#available_funds_error').css('display', 'block')
     } else {
         $('#submit_button').removeAttr('disabled')
-    }
-    // update bgcolor
-    for (i in itemTotal) {
-        $('#td_price_' + i).css('background-color', bgcolor);
+        $('#available_funds_error').css('display', 'none')
     }
 }
 
@@ -232,4 +228,6 @@ $(function() {
     });
 
     updateButtons($(document));
+
+    $(document).ready(updateBalance);
 });

app/views/group_orders/_form.html.haml

@@ -21,7 +21,8 @@
     });
 
 - title t('.title'), false
-
+.alert.alert-error.alert-block#available_funds_error{style: ('display:none')}
+  = t '.invalid_funds'
 .row-fluid
   .well.pull-left
     = close_button :alert

config/locales/en.yml

@@ -1064,6 +1064,7 @@ en:
       units: Units
       units_full: Filled units
       units_total: Total units
+      invalid_funds: Not enough available funds
     index:
       closed_orders:
         more: more...