.tundra .dijitTreeNodeRtl,.tundra .dijitTreeNodeRtl .dijitTreeExpandoLeaf{background-image:none}.tundra .dijitTreeNodeRtl .dijitTreeExpandoOpened{background-image:url('images/treeExpand_minus_rtl.gif')}.tundra .dijitTreeNodeRtl .dijitTreeExpandoClosed{background-image:url('images/treeExpand_plus_rtl.gif')}