I am using the code below to show a list of nodes.  To the document type of these nodes I have added a Unamed Checkbox Group.  I would like to display an icon for each box that is checked next to the node.   For example if someone checked blue it might show an image to the right of the item in the list.

<xsl:variable name="startNode" select="$currentPage/ancestor-or-self::*[@level = $level]" />

<xsl:variable name="nodesToShow" select="$startNode/*[@isDoc][not(umbracoNaviHide = 1)]" />

<xsl:if test="$nodesToShow">
    <img src="http://myheaderimage.png" />

    <ul>
        <xsl:for-each select="$nodesToShow">
            <li>
                <a href="{umbraco.library:NiceUrl(@id)}">
                    <xsl:value-of select="@nodeName" />
                </a>
            </li>
        </xsl:for-each>
    </ul>
</xsl:if>