Howto close tags?

Hi

I want to know how to get valid xml out of this source-file:
http://www.ticope.de/tmp/old1.xml

Most important is to close tags and bring them into correct order

I tried this:
// sample config file for HTML tidy
indent: auto
indent-spaces: 2
wrap: 72
markup: yes
output-xml: yes
input-xml: yes
show-warnings: yes
numeric-entities: yes
quote-marks: yes
quote-nbsp: yes
quote-ampersand: no
break-before-br: no
uppercase-tags: no
uppercase-attributes: no
char-encoding: utf8
new-inline-tags: cfif, cfelse, math, mroot,
  mrow, mi, mn, mo, msqrt, mfrac, msubsup, munderover,
  munder, mover, mmultiscripts, msup, msub, mtext,
  mprescripts, mtable, mtr, mtd, mth
new-blocklevel-tags: cfoutput, cfquery
new-empty-tags: cfelse


thanks in advance
Ragnar