XSL Template to add new button

add-new.xml

<xsl:output method="html" indent="no"/>
<xsl:decimal-format NaN=""/>
<xsl:param name="dvt_apos">'</xsl:param>
<!-- Define the HttpVDir variable -->
<xsl:param name="HttpVDir"/>

<!-- 
    Usage: <xsl:call-template name="addnew" />
-->
<xsl:template name="addnew">
    <xsl:variable name="newFormUrl">
        <xsl:value-of select="concat($HttpVDir, '/Lists/Announcements/NewForm.aspx')" />
    </xsl:variable>
    <tr>
    <td class="ms-addnew" style="padding-bottom: 3px;">
        <span style="POSITION: relative; WIDTH: 10px; DISPLAY: inline-block; HEIGHT: 10px; margin-right: 5px; OVERFLOW: hidden" class="s4-clust">
            <img style="POSITION: absolute; TOP: -128px !important; LEFT: 0px !important" alt="" src="/_layouts/images/fgimg.png" />
        </span>
        <a class="ms-addnew" onclick='javascript:SP.UI.ModalDialog.ShowPopupDialog("{$newFormUrl}"); return false;' href="{$newFormUrl}" target="_self">Add new announcement</a>
    </td>
    </tr>
</xsl:template>