.FooterAreaMeasure 
{
    float                   : left;
    width                   : 28px;
    height                  : 28px;
    background              : url(FooterAreaMeasure.png) no-repeat 0 center;
    cursor                  : pointer;
    vertical-align          : middle;
}

.FooterAreaMeasure:hover 
{
    background-position-x   : -28px;
}

.FooterAreaMeasure[on] 
{
    background-position-x   : -28px;
}