fixed bug 1497436 confirm @cols is a number

diff --git a/xsl/html/table.xsl b/xsl/html/table.xsl
index 37d0d25b761530f13402524350148a75db1fd909..18c344fed0855901fb54d77aa3f4ea23c21df438 100644 (file)
--- a/xsl/html/table.xsl
+++ b/xsl/html/table.xsl
@@ -141,7 +141,7 @@
 <!-- ==================================================================== -->
 
 <xsl:template match="tgroup" name="tgroup">
-  <xsl:if test="not(@cols) or @cols = ''">
+  <xsl:if test="not(@cols) or @cols = '' or string(number(@cols)) = 'NaN'">
     <xsl:message terminate="yes">
       <xsl:text>Error: CALS tables must specify the number of columns.</xsl:text>
     </xsl:message>