El form es este:
Código HTML:
<form name="alojar" method="post" action="http://url/includes/upload_basic.php" style="margin:0px;" enctype="multipart/form-data" onsubmit="MM_validateForm('theme','','R','preview','','R','nombre','','R'); return document.MM_returnValue;">
<table width="770" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="400" height="20" align="left">Imagen preview: </td>
<td width="30" align="left"> </td>
<td align="left">Nombre:</td>
<td align="left"> </td>
</tr>
<tr>
<td height="20" align="left"><input name="preview" type="file" size="40" /></td>
<td align="left"> </td>
<td align="left"><input name="nombre" type="text" size="25" /></td>
<td align="left"> </td>
</tr>
<tr>
<td height="30" align="left" valign="bottom">Theme:</td>
<td align="left"> </td>
<td align="left" valign="bottom"> </td>
<td align="left" valign="bottom"> </td>
</tr>
<tr>
<td align="left"><input name="theme" type="file" size="40" /></td>
<td colspan="2" rowspan="2" align="left"><span style="text-align:center; margin:10px;">
<input name="enviar" type="image" src="http://url/media/images/formulario/upload.gif" border="0" style="cursor:pointer"/>
</span></td>
<td align="left" valign="bottom"> </td>
</tr>
<tr>
<td align="left"> </td>
<td align="left" valign="bottom"> </td>
</tr>
</table>
</form>
Quiero validarlos todos (
nombre, theme y preview) entonces el js de validacion es el de DW, que es el que puse más arriba.