[xsl] How do I define a work variable in XSL with the current date and how do I format date in output

["Catherine Wilbur cwilbur@xxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

How do I define a work variable (GLDate) to contain the current date in 
format yyyymmdd?
 
<xsl:variable name="GLDateValue" select="current-date()"/>


How do I code the following line to put my GLDate in my output - want to 
format it in output as YYYYMMDD?
         <xsl:value-of select="$GLDateValue" />, 

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Catherine Wilbur  |  Senior Application Programmer  |  IT Services
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