.sliderwrapper{
position: relative;
overflow: hidden;
width: 812px;
height: 296px;
}

.sliderwrapper .contentdiv{
visibility: hidden;
position: absolute;
left: 0;
top: 0;
width: 812px;
height: 296px;
filter:progid:DXImageTransform.Microsoft.alpha(opacity=100);
-moz-opacity: 1;
opacity: 1;
}