Date Range in XSL

I have a XML document in the following format.  The date is in mm/dd/yyyy
format.  Once i get a symbol, start date and a end date, how do i search
the XML doc for all records that fall within that date range for that
symbol.   For example, in the below format, when the user enters in a query
for MSFT and date range from Start date 02/16/2003 to End date  04/16/2003,
Only one record is shown.

<recorddata>
    <symbol>MSFT</symbol>
    <date>04/15/2003</date>
 </recordata>
<recorddata>
    <symbol>CSCO</symbol>
    <date>04/15/2003</date>
 </recordata>
<recorddata>
    <symbol>MSFT</symbol>
   <date>01/14/2003</date>
 </recordata>
<recorddata>
    <symbol>INTC</symbol>
   <date>01/13/2003</date>
 </recordata>

Thanks a lot for your help

Nehal



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