mi era capitato spesso è volentieri che una pagina su ie si vedeva benissimo, ma su mozilla spuntavano delle imperfezioni, ma il contrario mai...

codice:
  <html>

  <head>

  <style type="text/css">
         .hd {font-family: Arial Black; color: #000000;font-size:12}
         .hgt {font-family: Tahoma; color:#FFCC66;font-size:11;text-decoration : none;}
         .msg {font-family: Tahoma; color:#FFFFFF;font-size:11; text-decoration : none;}
         .sys {font-family: Tahoma; color:#FF8888;font-size:11; text-decoration : none;}
         .field {font-family: Tahoma;color: #FFEE99;font-size: 12;text-decoration:inherit;border: 1px solid #FFFFFF;background-color: #000000}
         .field2 {font-family: Tahoma;color: #FFFFFF;font-size: 12;text-decoration:inherit;border: 1px solid #FFFFFF;background-color: #000000}

         a.li { text-decoration : none; color:#FFCC66;}
         a { text-decoration : underline; color:#FFCC66;}
         hr { border: 1px solid #FFCC66;}
   </style>
   <script language="javascript">
   function initiate()
   {
     document.chat.document.write("<html><head><link rel=\"stylesheet\" type=\"text/css\" href=\"../../chat.css\"></head><body bgcolor=\"black\">");
   }
   </script>
   </head>
   <body color="#000000">

   
  <script language="javascript">initiate();</script>
  <iframe width="100%" height="70%" frameborder="0" name="chat"></iframe>
  <form action="" name="invia" target="reload" method="POST">
  <table border="0" width="100%">
  <tr>
      <td rowspan="2" width="10%"><select name="dest[]" class="field" size="5" multiple>
      <optgroup label="Scegli destinatario" style="color: #FFFFFF;">
  <option value="11">...</option><option value="10">...</option></optgroup></select></td>

  <td><input type="text" name="msg" class="field" size="25"/></td></tr>
  <tr align="center">
  <td><input type="submit" value="Invia" class="field" size="25"/></td>
  </tr>
  </table>
  </form>
  <iframe height="1" frameborder="1" name="reload" style=" visibility: Hidden;"></iframe>
  </body></html>

questo codice si vede bene su mozilla, ma su IE si vede con lo sfondo bianco...why???