Answer 16: Selection
<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<head>
<title>Element Names</title>
</head>
<body>
<ul>
<xsl:apply-templates select="descendant::ATOM"/>
</ul>
</body>
</html>
</xsl:template>
<!-- red for liquids, blue for gases, black for solids, and green for unknown. -->
<xsl:template match="ATOM">
<li>
<xsl:choose>
<xsl:when test="@STATE='GAS'">
<span style="color: red"><xsl:value-of select="NAME"/></span>
</xsl:when>
<xsl:when test="@STATE='LIQUID'">
<span style="color: blue"><xsl:value-of select="NAME"/></span>
</xsl:when>
<xsl:when test="@STATE='SOLID'">
<span style="color: black"><xsl:value-of select="NAME"/></span>
</xsl:when>
<xsl:otherwise>
<span style="color: green"><xsl:value-of select="NAME"/></span>
</xsl:otherwise>
</xsl:choose></li>
</xsl:template>
</xsl:stylesheet>
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