XML to ASCII text

[Ronald Wee]

I'm new to XML/XSL and would appreciate any assistance. I would like to traverse the <event> tag and retrieve all the info as a single text record. But I'm having trouble with extracting the remaining <participants> and <entity> info (see expected output). So far, only managed to display partial info. Below are the given xsl & xml files.
Thanks in advance.

EXPECTED OUTPUT
================
1 , PHYSICS , Monday , 8:00 , 10:00 , 1A , Bush , Lab
2 , MATHS , Tuesday , 16:00 , 18:00 , 1A , Clinton , TutRm 1-2
1 , PHYSICS , Wednesday , 10:00 , 12:00 , 1A , Bush , Lab
3 , POLITICS , Thursday , 13:00 , 16:00 , 1A , Bush + Clinton , TutRm 1-1

reliefhelp.xsl
==============
<?xml version="1.0" ?>
- <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
- <xsl:template match="timetable">
- <xsl:for-each select="//event">
<xsl:value-of select="@courseId" />
<xsl:variable name="v_id4" select="@courseId" />
<xsl:text>,</xsl:text>
<xsl:value-of select="/project/courses/course[@id=$v_id4]/@name" />
<xsl:variable name="v_index1" select="/project/slots/@first" />
<xsl:variable name="v_index2" select="/project/slots/@last" />
<xsl:variable name="total_slots" select="number($v_index2) - number($v_index1) + 1" />
<xsl:variable name="v_day1" select="/project/days/@first" />
<xsl:variable name="v_day2" select="/project/days/@last" />
<xsl:text>,</xsl:text>
<xsl:variable name="v_day" select="floor(@weekhour div $total_slots)" />
<xsl:value-of select="/project/days/day[@index=$v_day]/@name" />
<xsl:variable name="v_starttime" select="@weekhour mod $total_slots + $v_index1" />
<xsl:variable name="v_endtime" select="$v_starttime + @duration" />
<xsl:text>,</xsl:text>
<xsl:value-of select="/project/slots/slot[@index=$v_starttime]/@name" />
<xsl:text>,</xsl:text>
<xsl:value-of select="/project/slots/slot[@index=$v_endtime]/@name" />
<br> <br />
<!-- need help to extract remaining info -->
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>

reliefhelp.xml
==============
<?xml version="1.0" encoding="UTF-8"?>
<?xml:stylesheet type="text/xsl" href="reliefhelp.xsl"?>
<project name="relief">
<slots first="8" last="17">
<slot index="8" name="8:00" />
<slot index="9" name="9:00" />
<slot index="10" name="10:00" />
<slot index="11" name="11:00" />
<slot index="12" name="12:00" />
<slot index="13" name="13:00" />
<slot index="14" name="14:00" />
<slot index="15" name="15:00" />
<slot index="16" name="16:00" />
<slot index="17" name="17:00" />
<slot index="18" name="18:00" />
</slots>
<days first="0" last="4">
<day index="0" name="Monday" />
<day index="1" name="Tuesday" />
<day index="2" name="Wednesday" />
<day index="3" name="Thursday" />
<day index="4" name="Friday" />
</days>
<entities entityType="1">
<entity id="5" entityType="1" name="1A" >
</entity>
</entities>
<entities entityType="2">
<entity id="1" entityType="2" name="Clinton" >
</entity>
<entity id="2" entityType="2" name="Bush" >
</entity>
</entities>
<entities entityType="3">
<entity id="3" entityType="3" name="Lab" >
</entity>
<entity id="4" entityType="3" name="TutRm 1-1" >
</entity>
<entity id="8" entityType="3" name="TutRm 1-2" >
</entity>
</entities>

<courses>
<course id="1" name="PHYSICS" duration="2+2" >
<participants>
<and id="1" entityId="5" />
<and id="2" entityId="2" />
<or id="3" entityType="3">
<and id="4" entityId="3" />
</or>
</participants>
</course>
<course id="2" name="MATHS" duration="2" >
<participants>
<and id="5" ententityId="5" />
<and id="6" entityId="1" />
<or id="7" entityType="3">
<and id="8" entityId="4" />
<and id="9" entityId="8" />
</or>
</participants>
</course>
<course id="3" name="POLITICS" duration="3.0" >
<participants>
<and id="10" entityId="5" />
<and id="11" entityId="2" />
<and id="12" entityId="1" />
<and id="16" entityId="4" />
</participants>
</course>
</courses>
<timetable>
<event id="1" courseId="1" duration="2" weekhour="0">
<resources>
<resource nodeId="4" entityId="3" />
</resources>
</event>
<event id="3" courseId="2" duration="2" weekhour="18">
<resources>
<resource nodeId="9" entityId="8" />
</resources>
</event>
<event id="2" courseId="1" duration="2" weekhour="22" >
<resources>
<resource nodeId="4" entityId="3" />
</resources>
</event>
<event id="4" courseId="3" duration="3" weekhour="35" >
<resources />
</event>
</timetable>
</project>