fadeIn does not work.

fadeIn does not work.

Hello,

i need some help at the "fadeIn" method for a simple div as seen here:

http://dawntec.com/jquery/

The box does not fadeIn at all. Where is the error?

slideDown("slow") does not work as well
slideUp("slow") works!


The CSS:
.box {
width: 702px;
height: 405px;
border:10px solid black;
background-color:blue;
}


The JS:     
<script type="text/javascript">
  $(document).ready(function(){
  $(".box").fadeIn("slow");
  $("p").fadeTo("slow",0.1);
   });
</script>

The html:
<div class="box"><p>Some Text here</p></div>


Thanks!

Andy