building a tabular format of data

Hi,

Here is the XML
<reportdetailinfo>
		<!-- tabular -->
		<testreport>
			<testname>Saline</testname>
			<testshortname>Sa</testshortname>
			<testresult>10.54</testresult>
			<testdatetime>12/12/98 10 am</testdatetime>
		</testreport>
		<testreport>
			<testname>Sodium</testname>
			<testshortname>Na</testshortname>
			<testresult>11.66</testresult>
			<testdatetime>12/21/98 12-30 am</testdatetime>
		</testreport>
		<testreport>
			<testname>Potassium</testname>
			<testshortname>Ka</testshortname>
			<testresult>10.89</testresult>
			<testdatetime>10/16/97 10 pm</testdatetime>
		</testreport>
		<testreport>
			<testname>Saline</testname>
			<testshortname>Sa</testshortname>
			<testresult>15</testresult>
			<testdatetime>12/21/98 12-30 am</testdatetime>
		</testreport>
		<testreport>
			<testname>Sodium</testname>
			<testshortname>Na</testshortname>
			<testresult>16.84</testresult>
			<testdatetime>12/12/98 10 am</testdatetime>
		</testreport>
		<testreport>
			<testname>Potassium</testname>
			<testshortname>Ka</testshortname>
			<testresult>33.6</testresult>
			<testdatetime>12/12/98 10 am</testdatetime>
		</testreport>
	</reportdetailinfo>


It needs to be displayed as :
		10/16/97	12/12/981	12/21/98
Potassium	10.89		33.6
Saline			10.54		15
Sodium			16.84		11.6

The first row should have testdatetime
The first row should have the testname
The values ahould match with the testname and testdatetime

Please help:
Here is the excerpt of the code that i am using for the values:
I have put the first row in  a table
the first column in a table
The third table listed below contains the values

<xsl:for-each select="//reportdetailinfo/testreport">
	<xsl:sort	select="testname" order="ascending"></xsl:sort>
		<xsl:if test="testname[not(./text()=preceding::testname/text())]">
			<xsl:variable name="preval" select="testname"></xsl:variable>
				<tr>
					<xsl:for-each select="//reportdetailinfo/testreport">
					<xsl:sort select="testdatetime" order="ascending"></xsl:sort>
						<xsl:if
test="testdatetime[not(./text()=preceding::testdatetime/text())]">
						<xsl:variable name="predate" select="testdatetime"></xsl:variable>
							<xsl:for-each select="//reportdetailinfo/testreport">
							<xsl:sort select="testname" order="ascending"></xsl:sort>
								<xsl:if test="testname = $preval and testdatetime = $predate">
									<td width="10"><spacer type="block" height="1" width="1"/></td>
									<td  height="25" width="133">
										<xsl:value-of select="testresult"/>
									</td>
									<td width="1" bgcolor="#999999">
										<spacer type="block" height="1" width="1"/>
									</td>																			</xsl:if>																		</xsl:for-each>
<xsl:if test="$flagprint = 0">
								<td width="10"><spacer type="block" height="1" width="1"/></td>
								<td  height="25" width="133">&#160;</td>
								<td width="1" bgcolor="#999999">
									<spacer type="block" height="1" width="1"/>
								</td>
							</xsl:if>
						</xsl:if>
					</xsl:for-each>
				</tr>
			</xsl:if>
</xsl:for-each>
The output is as follows:
		10/16/97	12/12/981	12/21/98
Potassium	10.89				33.6
Saline			10.54				15
Sodium			16.84				11.6

:-(

HELP !!!

Seema.


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