diff -r b71590debb98 -r 371dfea907fd sunbird-system-proxy.patch
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sunbird-system-proxy.patch	Tue Feb 09 11:16:29 2010 +0100
@@ -0,0 +1,88 @@
+diff --git a/calendar/base/content/preferences/connection.js b/calendar/base/content/preferences/connection.js
+--- a/calendar/base/content/preferences/connection.js
++++ b/calendar/base/content/preferences/connection.js
+@@ -69,17 +69,22 @@ var gConnectionsDialog = {
+       }
+     }
+     
+     var noProxiesPref = document.getElementById("network.proxy.no_proxies_on");
+     noProxiesPref.value = noProxiesPref.value.replace(/[;]/g,',');
+     
+     return true;
+   },
+-  
++ 
++  checkForSystemProxy: function ()
++  {
++    if ("@mozilla.org/system-proxy-settings;1" in Components.classes)
++      document.getElementById("systemPref").removeAttribute("hidden");
++  },
+ 
+   /**
+    * Handler function to be called when the network.proxy.type preference has
+    * changed while the connection preferences dialog is open.
+    */
+   proxyTypeChanged: function gCD_proxyTypeChanged() {
+     var proxyTypePref = document.getElementById("network.proxy.type");
+     
+diff --git a/calendar/base/content/preferences/connection.xul b/calendar/base/content/preferences/connection.xul
+--- a/calendar/base/content/preferences/connection.xul
++++ b/calendar/base/content/preferences/connection.xul
+@@ -40,16 +40,17 @@
+ 
+ <?xml-stylesheet href="chrome://global/skin/"?>
+ 
+ <prefwindow id="ConnectionsDialog" type="child"
+             xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+             title="&connectionsDialog.title;"
+             dlgbuttons="accept,cancel"
+             onbeforeaccept="return gConnectionsDialog.beforeAccept();"
++            onload="gConnectionsDialog.checkForSystemProxy();"
+ #ifdef XP_MACOSX
+             style="width: &window.macWidth; !important;">
+ #else
+             style="width: &window.width; !important;">
+ #endif
+ 
+   <prefpane id="ConnectionsDialogPane">
+ 
+@@ -88,16 +89,17 @@
+ 
+     <groupbox>
+       <caption label="&proxyTitle.label;"/>
+ 
+       <radiogroup id="networkProxyType" preference="network.proxy.type"
+                   onsyncfrompreference="return gConnectionsDialog.readProxyType();">
+         <radio value="0" label="&directTypeRadio.label;" accesskey="&directTypeRadio.accesskey;"/>
+         <radio value="4" label="&WPADTypeRadio.label;" accesskey="&WPADTypeRadio.accesskey;"/>
++        <radio value="5" label="&systemTypeRadio.label;" accesskey="&systemTypeRadio.accesskey;" id="systemPref" hidden="true"/>
+         <radio value="1" label="&manualTypeRadio.label;" accesskey="&manualTypeRadio.accesskey;"/>
+         <grid class="indent" flex="1">
+           <columns>
+             <column/>
+             <column flex="1"/>
+           </columns>
+           <rows>
+             <row align="center">
+diff --git a/calendar/locales/en-US/chrome/calendar/preferences/connection.dtd b/calendar/locales/en-US/chrome/calendar/preferences/connection.dtd
+--- a/calendar/locales/en-US/chrome/calendar/preferences/connection.dtd
++++ b/calendar/locales/en-US/chrome/calendar/preferences/connection.dtd
+@@ -43,16 +43,18 @@
+ <!ENTITY  window.width                  "37em">
+ <!ENTITY  window.macWidth               "39em">
+ 
+ <!ENTITY  proxyTitle.label              "Configure Proxies to Access the Internet">
+ <!ENTITY  directTypeRadio.label         "Direct connection to the Internet">
+ <!ENTITY  directTypeRadio.accesskey     "d">
+ <!ENTITY  WPADTypeRadio.label           "Auto-detect proxy settings for this network">
+ <!ENTITY  WPADTypeRadio.accesskey       "w">
++<!ENTITY  systemTypeRadio.label         "Use system proxy settings">
++<!ENTITY  systemTypeRadio.accesskey     "u">
+ <!ENTITY  manualTypeRadio.label         "Manual proxy configuration:">
+ <!ENTITY  manualTypeRadio.accesskey     "m">
+ <!ENTITY  autoTypeRadio.label           "Automatic proxy configuration URL:">
+ <!ENTITY  autoTypeRadio.accesskey       "A">
+ <!ENTITY  reload.label                  "Reload">
+ <!ENTITY  reload.accesskey              "e">
+ <!ENTITY  ftp.label                     "FTP Proxy:">
+ <!ENTITY  ftp.accesskey                 "F">