#slider {
   width: 670px; /* important to be same as image width */
   height: 300px; /* important to be same as image height */
   position: relative; /* important */
   overflow: hidden; /* important */
}

#sliderContent {
   width: 670px; /* important to be same as image width or wider */
   position: absolute; /* important */
   top: 0; /* important */
   margin-left: 0; /* important */
}

.sliderImage {
   float: left; /* important */
   position: relative; /* important */
   display: none; /* important */
}

.clear {
   clear: both;
}