a.offscreen {
position:absolute;
left:-1000px;
top:-1000px;
width:1px;
height:1px;
text-align: left; 
overflow:hidden;
}

a.offscreen:focus, a.offscreen:active, a.offscreen:hover { 
position:absolute; 
left:0; 
top:0; 
width:auto; 
height:auto; 
overflow:visible;
background-color:#FF3;
border: 1px dotted #000;
}