div.aviso {
  background-position:5px 1px;
  background-repeat:no-repeat;
  color:#000000;
  font-family:Verdana,Arial,Helvetica,sans-serif;
  font-size:12px;
  padding-left:40px;
  width:440px;
  margin-left:35px;
  clear: both;
  padding-top: 10px;
  padding-bottom: 12px;
}

div.correcto {
  background-image:url(../images/ok_user.jpg);
  border:2px solid #99CC00;
}

div.warning {
  border:2px solid #FFCC33;
  background-image:url(../images/warning_user.jpg);
}

div.error {
  border:2px solid #CC3333;
  background-image:url(../images/error_user.jpg);
}