a.screen, a.screen:visited {
color:#CCC;
position:relative;
z-index:1;
}

a.screen b {
position:absolute;
visibility:hidden; /* hide the image */
width:202px; /* give it a width */
height:0; /* no height to solve an Opera bug that makes it selectable when hidden */
border-top:1px solid #CCC; /* add a border */
left:199px; /* position:the image */
top:-1px;
}

a.screen:hover {
text-decoration:none;
border:0; /* needed for this to work in IE */
z-index:1000;
}
a.screen:hover b {
visibility:visible; /* make the image visible */
height:202px; /* now give it a height */
cursor:pointer; /* for IE */
z-index:500;
}
a.screen:hover b img {
border:0; /* remove the link border */
left:10px;
top:5px
}