This should be easy (for most Monks). This one of my first attempts at modifying someone else's code. The code creates a hyperlinked list of images and thumbnails in one long column. I'm trying to use a table sturcture to present the list in two columns. The var $counter is to distinguish between odd and even columns so I can properly open & close the table rows.

The first line returns the error message: Global symbol "$counter" requires explicit package name at TnImg.pl line 16.

It gives the same message if the var is preceeded by 'my'.
I'm using strict and the -w.

Can some kind soul point me towards the solution? 

$counter = 0;
# add link text to each filename
foreach my $name (@filenames) {
  if ($counter % 2){      #odd rows
    $name = qq{<tr><td><img align="center" valign="center" src="TN/tn_
+$name" width="75" height="42">
    &nbsp;&nbsp;<a href="$name">$name</a></td>\n};
  }else{                  #even rows
    $name = qq{<td><img align="center" valign="center" src="TN/tn_$nam
+e" width="75" height="42">
    &nbsp;&nbsp;<a href="$name">$name</a></td></tr>\n};
  }
  $counter++;
}

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This is my first perl question, so I may have left out something important.

In reply to Error msg "requires explicit package name" by Theo

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