Código HTML:
<form action="x_insertar_img.php" method="post" enctype="multipart/form-data"> <input type="hidden" name="id_propiedad" value="<?php echo $_GET['id']; ?>"> <input type="hidden" name="num_img" value="<?php echo $_GET['num']; ?>"> <table border="0" cellspacing="0" cellpadding="3" align="center"> <tr> <td align="right" valign="top" width="150"><font class="texto">Imagen<br><br></font></td> <td><input type="hidden" name="MAX_FILE_SIZE" value="409600"><input name="userfile" type="file" size="40" maxlength="100"></td> </tr> <tr> <td colspan="2" align="right"> <input name="btn_agregar" type="submit" value="Cargar y Agregar mas imagenes" /> <input name="btn_terminar" type="submit" value="Cargar y Terminar" /> </td> </tr> </table> </form>