.rapKnob{
border-radius:50%;
border-color:#000;
border-style:solid;
border-width:4%;
cursor:pointer;
display:inline-block;
margin:8px;
position:relative;
border-bottom-color:transparent;
width:80px;
}
.rapKnobIn{
top:50%;
left:50%;	
background-color:black;
position:absolute;
height:50%;
width:4%;
z-index:1;
}

.rapKnobCaption{
left:0px;
right:0px;
top:90%;
display:block;
position:absolute;
text-align:center;
white-space:nowrap;
z-index:2;
}