I've been experimenting with creating an inner shadow effect on an image, but I can only seem to achieve an outer shadow. Just for clarification, .showSlide is a div element.
.showSlide {
display: block;
width:100%;
height:350px;
}
.showSlide img {
width: 100%;
height:100%;
border-radius: 15%;
-webkit-box-shadow: 0 0 1px 3px #000 inset;
-moz-box-shadow: 0 0 1px 3px #000 inset;
box-shadow: 0 0 1px 3px #000 inset;
}