Dialog with form issue

Dialog with form issue

<form action="savedQueries.do?method=saveQuery">
<table>
    <tr>
        <td>Id:</td>
        <td><input type="text" name="queryId" /></td>
    </tr>
    <tr>
        <td>Descrizione:</td>
        <td><input type="text" name="queryDescription" /></td>
    </tr>
    <tr>
        <td colspan="2" align="right">
            <input type="submit" value="Ok" />
        </td>
    </tr>
</table>
</form>
My css <link type="text/css" rel="stylesheet" href="http://
jqueryui.com/latest/themes/base/ui.all.css" />
Consider this html classic form inside of a jquery modal dialog.
Other things such as text, simple tables, even flash movies work
perfectly.
An input tag makes title bar disappear and doesn't show correctly (a
little upper).
What can it be?
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