diff --git a/styles/prosilver/template/portal/portal_body.html b/styles/prosilver/template/portal/portal_body.html
index c065ec9f..69494911 100644
--- a/styles/prosilver/template/portal/portal_body.html
+++ b/styles/prosilver/template/portal/portal_body.html
@@ -72,7 +72,7 @@
 
 	<!-- [+] right module area -->
 		<!-- IF S_RIGHT_COLUMN -->
-		<div id="portal-right" style="width: {S_PORTAL_RIGHT_COLUMN}px; margin-left: -{S_PORTAL_RIGHT_COLUMN}px;">
+		<div id="portal-right" style="width: {S_PORTAL_RIGHT_COLUMN}px; margin-<!-- IF S_CONTENT_DIRECTION eq 'rtl' -->right<!-- ELSE -->left<!-- ENDIF -->: -{S_PORTAL_RIGHT_COLUMN}px;">
 			<!-- BEGIN modules_right -->
 				<!-- DEFINE $TEMPLATE_FILE = '{modules_right.TEMPLATE_FILE}' -->
 				<!-- DEFINE $IMAGE_SRC = '{modules_right.IMAGE_SRC}' -->
diff --git a/styles/prosilver/theme/portal.css b/styles/prosilver/theme/portal.css
index 433480f7..11894ea9 100644
--- a/styles/prosilver/theme/portal.css
+++ b/styles/prosilver/theme/portal.css
@@ -281,12 +281,20 @@ a.portal-forumtitle {
 	float: left;
 }
 
+.rtl #portal-left, .rtl #portal-right {
+	float: right;
+}
+
 #portal-center-wrapper {
 	width: 100%;
 	float: left;
 	display: block;
 }
 
+.rtl #portal-center-wrapper {
+	float: right;
+}
+
 #portal-column-area {
 	width: 100%;
 	margin: 0 auto;
@@ -296,6 +304,11 @@ a.portal-forumtitle {
 	margin-left: -100%;
 }
 
+.rtl #portal-left {
+	margin-right: -100%;
+	margin-left: 0;
+}
+
 /*
 * top spacing between portal body table and headerbar spacing is usually 10px
 */