Major <xsl:for-each select="/search/form/fields/pages/page">
<xsl:variable name="id" select="@id"/>
<option value="{$path}">
<xsl:if test="/search/form/values/page[$id = .]">
<xsl:attribute name="selected">selected</xsl:attribute>
</xsl:if>
<xsl:value-of select="@title"/>
</option>
</xsl:for-each>
should be
<option value="{$id}">
