User:Aude/hidecolumns.js

function collapseColumn { tables = $('[class*=hidecol]'); $.each(tables, function {               colIndex = $(this).attr('class').match(/hidecol(\d+)/)[1];                rows = $(this).find('tr');                $.each(rows, function { cells = $(this).children; i = 0; $.each(cells, function {                               if (i == (colIndex - 1)) {                                        $(this).css('display', 'none');                                }                                i++;                        }); });       }); }

$( collapseColumn );