Index: blocks/navigation/styles.css
===================================================================
--- blocks/navigation/styles.css	(revision )
+++ blocks/navigation/styles.css	(revision )
@@ -12,6 +12,7 @@
 .block_navigation .block_tree .tree_item.branch.navigation_node {background-image:none;padding-left:0;}
 .block_navigation .block_tree .type_activity > .tree_item.branch {background-image:none;position:relative;}
 .block_navigation .block_tree .type_activity > .tree_item.branch img {position:absolute;left:0;}
+.dir-rtl .block_navigation .block_tree .type_activity > .tree_item.branch img {position:absolute;right:0;}
 .block_navigation .block_tree .root_node.leaf {padding-left:0px;}
 .block_navigation .block_tree .active_tree_node {font-weight:bold;}
 .block_navigation .block_tree .depth_1.current_branch ul {font-weight:normal;}