.topPage
{
    background-image: url('Images/top.gif');
    background-position:center;
    background-repeat:no-repeat;
    display:inline-block;
    vertical-align: middle; 
    height: 20px; 
    width: 20px;
    margin:1px 4px 0px 0px;
    cursor: pointer;
}
.bottomPage
{
    background-image: url('Images/bottom.gif');
    background-position:center;
    background-repeat:no-repeat;
    display:inline-block;
    vertical-align: middle; 
    height: 20px; 
    width: 20px;
    margin:1px 4px 0px 0px;
    cursor: pointer;
}
.explicitParamPage
{
    background-image: url('Images/icon_copy.png');
    background-position:center;
    background-repeat:no-repeat;
    display:inline-block;
    vertical-align: middle; 
    height: 20px; 
    width: 20px;
    margin:1px 4px 0px 0px;
    cursor: pointer;
}