#dhtmltooltip{
    position: absolute;
    width: 150px;
    visibility: hidden;
    z-index: 100;
    /*Remove below line to remove shadow. Below line should always appear last within this CSS*/
    filter: progid:DXImageTransform.Microsoft.Shadow(color=gray,direction=135);
}

#dhtmltooltiptext{
    font-family: Verdana;
    font-size: 10px;
    background-color: #FFFFFF;
    padding: 0px;
    text-align: center;
    z-index: 100;
}