{
 count=$1;
 if (NR % 2 == 0) print "<tr class=a1>"
 else print "<tr class=a2>"
 if (count~/[0-9]/) {
	$1="";
	statement=$0;
	print "<td align=right>"count"</td><td>"statement"</td></tr>"
 } else {
	print "<td>&nbsp;</td><td><b>"$0"</b></td></tr>"
 }
}
