$column_data{qty} .= qq|<button type="button" onclick="calculate_qty_selection_window('qty_$i','alu_$i', 'formel_$i', $i)">| . $locale->text('*/') . qq|</button>
<input type=hidden name="formel_$i" value="$form->{"formel_$i"}"><input type=hidden name="alu_$i" value="$form->{"alu_$i"}"></td>|;
}
$column_data{qty} .= qq|<button type="button" onclick="calculate_qty_selection_window('qty_$i','alu_$i', 'formel_$i', $i)">| . $locale->text('*/') . qq|</button>
<input type=hidden name="formel_$i" value="$form->{"formel_$i"}"><input type=hidden name="alu_$i" value="$form->{"alu_$i"}"></td>|;
}