.overlayTextDiv{    
    position: absolute;
    left: 2px;
    top: 2px;
    width: 16px;  /* to give room to center the text */
    height: auto;
    text-align: center;
    cursor: pointer;
}

.overlayText{
    text-decoration: none;
    text-align: center;
    font-family: Verdana;
    font-size: 7pt;
    color: #000000;
    cursor: pointer;
    letter-spacing: -2px;
}

.tooltipBox {
    font-family: Verdana;
    font-size: 10px; 
    font-weight: bold; 
    text-align: center; 
    padding: 1px;
    color: #000000;
    z-index: 4000;
    border : 1px solid black;
    background-color : #FFFFFF;
}