hoe to use "(" within a variable

Hi,
	I need to define a variable in XSL sheet as follows:
<xsl:variable name="entering_log" select='sprintf(log_str, "\n%s: %d: %s:
%s", __FILE__,__LINE__,fn, "Entering"); log_func();' ></xsl:variable>
	I'm getting an error: "Could not find function: sprintf()" from the
XSL engine. How to escape the characters ( ) " ' so that they will be
interpreted as normal text by the XSL engine.

____________________________________________________________________________
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Vinoth
iDEN OMC Software, GSG
Motorola, India
voice: 91-040-3308090 extn:3208
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