.line {margin: 0; overflow: hidden;_overflow:visible;_zoom:1 }
.unit{float:left;_zoom:1;}
.size1of1{float:none;}
.size1of2{width:510px; margin-left: 80px}
.size2of2{width:370px;}
.lastUnit {float:none;_position:relative; _left:-3px; _margin-right: -3px;width:auto;}

.header .unit { overflow: hidden }