#slider { 
   width: 800px; /* important to be same as image width */ 
   height: 370px; /* important to be same as image height */
   position: relative; /* important */
   overflow: hidden; /* important */
}

#sliderContent {
   width: 800px; /* important to be same as image width or wider */
   position: absolute; /* important */
   top: 0; /* important */
   margin-left: -35px; /* important */
}

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

.sliderImage span {
   position: absolute; /* important */
   left: 0;
   font: 10px/15px Arial, Helvetica, sans-serif;
   padding: 0px; /* og 10px 13px */
   width: 0px; /* og 374. Should be slidercontent width for text to display */
   background-color: #000;
   filter: alpha(opacity=70); /* here you can set the opacity of box with text */
   -moz-opacity: 0.7; /* here you can set the opacity of box with text */
   -khtml-opacity: 0.7; /* here you can set the opacity of box with text */
   opacity: 0.7; /* here you can set the opacity of box with text */
   color: #fff;
   display: none; /* important */
   top: 0;

   /*
       if you put
       top: 0; -> the box with text will be shown at the top of the image 
       if you put
       bottom: 0; -> the box with text will be shown at the bottom of the image
   */
}

.clear {
   clear: both;
}