Calling a vbscript function

Hi All

I want to call a vbscript function MyFunction(intValue) which accepts an 
integer value and returns a string.
I am trying to do some thing like this :-

<msxsl:script language="VBScript" implements-prefix="user">
<![CDATA[

        function MyFunction( Secs )
        .........
        end function


]]>
</msxsl:script>

And I trying to call the function like this

<b><xsl:value-of select="user:MyFunction(<xsl:value-of 
select="$intDuration"/>)" /></b>
Can any one help me with the correct syntax.

Thanks and Regards
Rajith

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