aligned left-right sidebar

Hi,

In “myStylesheet.xsl: 
<xsl:param name="double.sided">1</xsl:param>

In “myDocbook.xml”
  <sidebar>
            <?dbfo sidebar-width="1.6in"?>
          <?dbfo float-type="outside"?>          
   </sidebar>

For my work I would like the following: 

“right-aligned” in sidebar text on the even pages, 
“left-aligned” in the sidebar text on the odd pages

Is it possible to manage it? How? Thanks for any help!!!

Lily

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