#header{
      background: none;
      text-align: center;
    }
    
    #header_div{
      margin-left: 65px;
    }
    
    #header_div IMG{
      float: left;
    }

    div.content{
      margin-right: 15px;
    }

/* utilizzato per notificare caricamento pagina */
#loading{
		position: fixed;
		width:330px;
		height:50px;
		left:35%;
		top:180px;
		z-index:1;
		background:#999 url('img/loading.gif') no-repeat left top;
		font: 30px Arial, Helvetica, sans-serif;
		color:#ffffff;
		padding:20px;
		opacity: 0.75;
}