HTML form is not working with table inside

Here I placed the table inside form to arrange the form items. It does not work even though it is valid. ``` <form method="get" action="another.php"> <table width="50%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="60%"> Number: <input type="text" name="number" /> </td> <td width="20%" align="center"> Title: <input type="text" name="title" /> </td> <td width="20%"> Short Desc: <input type="text" name="shortdesc" /> </td> </tr> </table> </form> ``` When I press Enter, the form won't submit. where as if I place a submit button anywhere inside the form, it works for both Enter key and Button click. ``` <input type = "submit" value="Submit" /> ``` But I don't want any buttons for submissions. I Submit the form by pressing Enter key. Any clues why this doesn't work ?