When using textwithpicto() from core/class/html.form.class.php, if you
are reading source code with firefox, you will see that a part of the
generated html is highlighted in red.
<td class="classfortooltip" title="title text"valign="top" width="14">
should be :
<td class="classfortooltip" title="title text" valign="top" width="14">