Hi, 
I have a filter function that gives the user 2 columns to select that
they want to filter on, and I want the second filter to be negative. I
also want to use the starts-with() function so that users won't have
to fill in complete filtervalues. Combining the two, not() and
starts-with() is somewhat problematic... Here's my xsl selectquery
where the filtering is done, with both filters positive:

<xsl:apply-templates select="general/data/rows/row/*[name()=$field1
and (@value=$filter1 or
starts-with(@value,$filter1))]/../*[name()=$field2 and
(@value=$filter2 or starts-with(@value,$filter2))]/.."
mode="tableData" />

Now I thought the second filter had to look like this: 
*[name()=$field2 and (@value=!$filter2 or
not(starts-with(@value,$filter2)))]

but this one makes my table disappear completely. It says there's a
problem with the Javascript, though, so that could be it as well...Can
someone tell me if this is the proper way to do this? Or should I use
more brackets or another combination of operators or something?
Thanks! Sharon