problema para ver un fondo en ff

[hitokirilv4]

Código:

 <div id="f"><form method="post" name="form1" action="<?php echo $editFormAction; ?>">
                  
                  <table align="center">
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Marca:</font></td>
                      <td><select name="marca">
                        <?php
do {  
?>
                        <option value="<?php echo $row_Recordset1['nom']?>"<?php if (!(strcmp($row_Recordset1['nom'], $row_Recordset1['nom']))) {echo "selected=\"selected\"";} ?>><?php echo $row_Recordset1['nom']?></option>
                        <?php
} while ($row_Recordset1 = mysql_fetch_assoc($Recordset1));
  $rows = mysql_num_rows($Recordset1);
  if($rows > 0) {
      mysql_data_seek($Recordset1, 0);
	  $row_Recordset1 = mysql_fetch_assoc($Recordset1);
  }
?>
                      </select></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Categoria</font></td>
                      <td><select name="tipprod">
                        <?php
do {  
?>
                        <option value="<?php echo $row_Recordset2['nom']?>"<?php if (!(strcmp($row_Recordset2['nom'], $row_Recordset2['nom']))) {echo "selected=\"selected\"";} ?>><?php echo $row_Recordset2['nom']?></option>
                        <?php
} while ($row_Recordset2 = mysql_fetch_assoc($Recordset2));
  $rows = mysql_num_rows($Recordset2);
  if($rows > 0) {
      mysql_data_seek($Recordset2, 0);
	  $row_Recordset2 = mysql_fetch_assoc($Recordset2);
  }
?>
                      </select></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Sub Categoria:</font></td>
                      <td><select name="tippro2">
                        <?php
do {  
?>
                        <option value="<?php echo $row_Recordset3['nom']?>"<?php if (!(strcmp($row_Recordset3['nom'], $row_Recordset3['nom']))) {echo "selected=\"selected\"";} ?>><?php echo $row_Recordset3['nom']?></option>
                        <?php
} while ($row_Recordset3 = mysql_fetch_assoc($Recordset3));
  $rows = mysql_num_rows($Recordset3);
  if($rows > 0) {
      mysql_data_seek($Recordset3, 0);
	  $row_Recordset3 = mysql_fetch_assoc($Recordset3);
  }
?>
                      </select></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Nombre Del Producto:</font></td>
                      <td><input name="nomprod"  id="nomprod" type="text" value="" size="25" maxlength="25"></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Precio</font></td>
                      <td><input name="precprod" id= "precprod"type="text" value="" size="6" maxlength="6"onKeyPress="return IsNumber(event);"></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Cantidad:</font></td>
                      <td><input type="text" name="candis" id="candis" value="" size="2"onKeyPress="return IsNumber(event);"></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right" valign="top"><font color="#FFFFFF">Descripcion:</font></td>
                      <td valign="top"><textarea name="despro"  id="despro"cols="25" rows="3"></textarea></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Imagen:</font></td>
                      <td><input name="img_pequea" type="text" id="img_pequea" value="" size="25" maxlength="25"></td>
                    </tr>
                    <tr valign="baseline">
                      <td nowrap align="right"><font color="#FFFFFF">Imagen Grande:</font></td>
                      <td><input name="img_grande" type="text" id="img_grande" value="" size="25" maxlength="20"></td>
                    </tr>
                    <tr valign="bottom">
                      <td height="32" align="right" nowrap>;</td>
                      <td><input type="submit" value="Registrar"></td>
                    </tr>
                  </table>
                  <input type="hidden" name="idpro" value="">
                  <input type="hidden" name="MM_insert" value="form1">
                </form></div>

esta es la libreria que le agrege en js

Código:

<script type="text/javascript">
window.onload=function(){
Nifty("div#caja","big");
Nifty ("div#f","big") ;
menu_init(0,12,1,-20,10);
}
</script>

si hace falta algo mas me dices