Prova a fare:

codice:
    <body> 
         <form method="post" action=""> 
           <table> 
                <tbody id="Inputs"> 
                    <tr id="Input[0]"> 
                        <td> 
                            <input id="Data[0]" type="text" name="nice[0]" value="no" style="width:200px;" onclick="if (this.value == 'no') this.value='';" onblur="if (this.value == '') this.value='no';" /> 
                        </td> 
                        <td> 
                            <input id="Info[0]" type="text" value="ok" name="bad[0]" style="width:200px;" onclick="if (this.value == 'ok') this.value='';" onblur="if (this.value == '') this.value='ok';" /> 
                        </td> 
                    </tr> 
                </tbody> 
                <tr> 
                    <td> 
                        <input type="button" value="+" onclick="addAnotherField();" /> 
                    </td> 
                    <td> 
                        <input type="submit" name="send" value="Ok" /> 
                    </td> 
                </tr> 

           </table> 
        </form> 
    </body>