--- a/suite/themes/classic/jar.mn
+++ b/suite/themes/classic/jar.mn
@@ -167,16 +167,18 @@ classic.jar:
   skin/classic/editor/icons/progress-failed.gif                         (editor/icons/progress-failed.gif)
 #ifdef XP_MACOSX
   skin/classic/messenger/accountManage.css                              (mac/messenger/accountManage.css)
   skin/classic/messenger/mailWindow1.css                                (mac/messenger/mailWindow1.css)
   skin/classic/messenger/messageHeader.css                              (mac/messenger/messageHeader.css)
   skin/classic/messenger/primaryToolbar.css                             (mac/messenger/primaryToolbar.css)
   skin/classic/messenger/icons/messengericons.png                       (mac/messenger/icons/messengericons.png)
   skin/classic/messenger/icons/messengericons-small.png                 (mac/messenger/icons/messengericons-small.png)
+  skin/classic/messenger/icons/spin-buttons.png                         (mac/messenger/icons/spin-buttons.png)
+  skin/classic/messenger/icons/spin-buttons-active.png                  (mac/messenger/icons/spin-buttons-active.png)
   skin/classic/messenger/icons/twisty-clsd.png                          (mac/messenger/icons/twisty-clsd.png)
   skin/classic/messenger/icons/twisty-open.png                          (mac/messenger/icons/twisty-open.png)
   skin/classic/messenger/addressbook/addressbook.css                    (mac/messenger/addressbook/addressbook.css)
   skin/classic/messenger/addressbook/icons/addressbookicons.png         (mac/messenger/addressbook/icons/addressbookicons.png)
   skin/classic/messenger/messengercompose/messengercompose.css          (mac/messenger/messengercompose/messengercompose.css)
   skin/classic/messenger/smime/msgCompSMIMEOverlay.css                  (mac/messenger/smime/msgCompSMIMEOverlay.css)
   skin/classic/messenger/smime/icons/smimeicons.png                     (mac/messenger/smime/icons/smimeicons.png)
   skin/classic/messenger/smime/icons/smimeicons-small.png               (mac/messenger/smime/icons/smimeicons-small.png)

new file mode 100644
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GIT binary patch
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--- a/suite/themes/classic/mac/messenger/mailWindow1.css
+++ b/suite/themes/classic/mac/messenger/mailWindow1.css
@@ -179,13 +179,43 @@
 }
 
 .tabmail-strip {
   border-bottom: 1px solid #A1A1A1;
   padding-bottom: 3px;
   background-color: #E8E8E8;
 }
 
+/* ..... folder pane adjustments ..... */
+
+.folderview-cycler,
+.folderview-cycler > .toolbarbutton-icon {
+  padding: 0 !important;
+  margin: 0 !important;
+  border: none !important;
+}
+
+.folderview-cycler > .toolbarbutton-text {
+  display: none;
+}
+
+.folderview-cycler[dir="prev"],
+.folderview-cycler[dir="next"][chromedir="rtl"] {
+  list-style-image: url("chrome://messenger/skin/icons/spin-buttons.png");
+  -moz-image-region: rect(0 15px 16px 0);
+}
+
+.folderview-cycler[dir="next"],
+.folderview-cycler[dir="prev"][chromedir="rtl"] {
+  list-style-image: url("chrome://messenger/skin/icons/spin-buttons.png");
+  -moz-image-region: rect(0 31px 16px 15px);
+}
+
+.folderview-cycler:active {
+  list-style-image: url("chrome://messenger/skin/icons/spin-buttons-active.png") !important;
+}
+
 /* ..... tabmail ..... */
 
 .tab-close-button {
   margin: 0;
 }
+

--- a/suite/themes/classic/messenger/mailWindow1.css
+++ b/suite/themes/classic/messenger/mailWindow1.css
@@ -50,16 +50,36 @@
    :: resize the pane vertically -EDV
    ::::: */
 
 #messagepanebox {
   min-height: 10px;
   height: 0px;
 }
 
+/* ..... folder pane adjustments ..... */
+
+.folderview-cycler > .toolbarbutton-text {
+  display: none;
+}
+
+.folderview-cycler > .toolbarbutton-icon {
+  margin: 0px;
+}
+
+.folderview-cycler[dir="prev"],
+.folderview-cycler[dir="next"][chromedir="rtl"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-lft.gif");
+}
+
+.folderview-cycler[dir="next"],
+.folderview-cycler[dir="prev"][chromedir="rtl"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-rit.gif");
+}
+
 /* ::::: border adjustments for focus ring and joined splitters ::::: */
 
 /* ..... splitter adjustments ..... */
 
 #folderpane-splitter {
   border-right: none;
   border-bottom: none;
   border-left: none;
@@ -71,17 +91,17 @@
   min-height: 5px;
 }
 
 #threadpane-splitter[state="collapsed"] {
   border-bottom: 2px solid;
 }
 
 /* ..... tree adjustments ..... */
- 
+
 #folderTree {
   border-right: 1px solid;
   -moz-border-right-colors: ThreeDShadow;
   min-width: 1px;
 }
 
 #threadTree {
   border-bottom: 2px solid;

--- a/suite/themes/modern/messenger/mailWindow1.css
+++ b/suite/themes/modern/messenger/mailWindow1.css
@@ -50,16 +50,36 @@
    :: resize the pane vertically -EDV
    ::::: */
 
 #messagepanebox {
   min-height: 10px;
   height: 0px;
 }
 
+/* ..... folder pane adjustments ..... */
+
+.folderview-cycler > .toolbarbutton-text {
+  display: none;
+}
+
+.folderview-cycler > .toolbarbutton-icon {
+  margin: 0px;
+}
+
+.folderview-cycler[dir="prev"],
+.folderview-cycler[dir="next"][chromedir="rtl"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-lft.gif");
+}
+
+.folderview-cycler[dir="next"],
+.folderview-cycler[dir="prev"][chromedir="rtl"] {
+  list-style-image: url("chrome://global/skin/arrow/arrow-rit.gif");
+}
+
 /* ::::: border adjustments for focus ring and joined splitters ::::: */
 
 #folderpane-splitter {
   border-right: none;
   border-bottom: none;
   border-left: none;
   min-width: 5px;
 }
@@ -69,17 +89,17 @@
   min-height: 5px;
 }
 
 #threadpane-splitter[state="collapsed"] {
   border-bottom: 2px solid;
 }
 
 /* ..... tree adjustments ..... */
- 
+
 #folderTree {
   border-right: 2px solid;
   -moz-border-right-colors: #DFE5EF #97A4B2;
   min-width: 1px;
 }
 
 #threadTree {
   border-bottom: 2px solid;