Tooltip javascript disrupts following form element when "title" attribute not given - forms

Question

I'm using a javascript tooltip provided by jqueryTOOLS to give tool tips within a form.
For some form elements that do not require a tool tip I want to leave the title string blank, however if I do this then it causes disruption in the subsequent elements of the form - almost as if it is treating them as a tool tip: on mouseover an element with no title string it moves the following element's position to hover next to the field, then when no longer focused it disappears permanently.
My tooltip code:
$(function() {
$("#myform :input").tooltip({
position: "center right",
offset: [-2, 10],
effect: "fade",
opacity: 0.7
});
});
As you have probably guessed this tool tip is based on the 'title' attribute of a field.
After having included
<script src="http://cdn.jquerytools.org/1.2.7/full/jquery.tools.min.js"></script>
in the header.
Hopefully my description of events made sense!
Thanks in advance for any help

Answer 1

I fixed a problem giving me the same error, but in a different context:
I had a table with two columns, both colums containing tooltips (a DIV in the corresponding TD).
<table>
<tbody>
<tr>
<td><div class="tooltip"></div></td>
<td><div class="tooltip"></div></td>
</tr>
</tbody>
</table>
When opening the tooltip in the first column, the height and width of the second column TD change (as if that TD was the tooltip).
Adding an extra empty DIV element after the tooltip DIV in the TD of the first column solved the problem.
<table>
<tbody>
<tr>
<td>
<div class="tooltip"></div>
<div></div> <!-- extra empty div -->
</td>
<td><div class="tooltip"></div></td>
</tr>
</tbody>
</table>

Answer 2

I figured it out:
The trigger element was defined to all inputs, so it was using the next as a tooltip in the lack of a title element.
Just a bug on the party of jqueryTOOLS but an easy solution:
replace
$("#myform :input")
with
$("#myform :input[title]")
Hope this helps someone else