body {
background-color: #fff;
color: #000;
font-family: Verdana, Helvetica, sans-serif; 
font-size: 12px; 
padding:20px;
}
.cl{clear:both;}
.l{float:left;}
.p{padding:0;}
.m{margin:10px;}

a.picture {background: url(opacity_01.png) no-repeat; width:183px; height:146px; display:block;}
a.picture:hover {background: url(blank_01.gif) repeat; width:183px; height:146px; display:block;}

.image{background-repeat: no-repeat; border: none;}