.sliderbutton {float:left; width:53px; padding-top:120px}
.sliderbutton img {cursor:pointer}
#slider {float:left; position:relative; overflow:hidden; width:840px; height:300px; margin:0px 7px 0px 7px; }
#slider ul {position:absolute; list-style:none; top:0; left:0}
#slider li {float:left; width:840px; height:300px;}