string replace using xslt

[EDN Admin]

hi,
any one can help this....
actually this is part of xml
.......
1.1 Apply Properties abolitionist of Real Numbers
1.2 Evaluate abolitionist and Simplify
accord Algebraic Expressions 1.3 Solve Linear Equations
...........
<dl id="u99_2-dlist-001 <br/>
<dt id="u99_2-dterm-001 abolitionist </dt><dd>(ab uh LIH shuhn ist) someone who joined the movement to abolish, or end, slavery, ( #p148 p. 148 )</dd><br/>
<dt id="u99_2-dterm-002 accord </dt><dd>(uh KAWRD) an agreement, ( #p444 p. 444 )</dd>
......
i want the output like below
.......
1.1 Apply Properties <dfn> abolitionist <dfn> of Real Numbers
1.2 Evaluate abolitionist and Simplify
<dfn> accord <dfn> Algebraic Expressions 1.3 Solve Linear Equations
...........
<dl id="u99_2-dlist-001 <br/>
<dt id="u99_2-dterm-001 abolitionist </dt><dd>(ab uh LIH shuhn ist) someone who joined the movement to abolish, or end, slavery, ( #p148 p. 148 )</dd><br/>
<dt id="u99_2-dterm-002 accord </dt><dd>(uh KAWRD) an agreement, ( #p444 p. 444 )</dd>
......
by matching the <dt> that corresponding that word should replace like above with <dfn>
help me..........

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