Remove blank element while copying

i'm using below code to copy from one XML to another XML.

Code:

---

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
        <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

<xsl:template match="node()|@*">
        <xsl:copy>
                <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
</xsl:template>

</xsl:stylesheet>

---

Whist copying - i need to remove element which does not have value in it.. how to do this??

Thanks
Venu