Hi Muhammad.

I think this will work for you:

<ul>
     <xsl:for-each select="$currentPage/ancestor-or-self::root/* [string(umbracoNaviHide) != '1' and @isDoc]">
           <li>
                <a href="{umbraco.library:NiceUrl(@id)}">
                    <xsl:value-of select="@nodeName"/>
                </a>
           </li>
     </xsl:for-each>
</ul>

The top most nodes are actually level 1, but anyway.

/Kim A