.GridExpandCollapseButton
        {
            cursor: hand;
            border: solid 1px gray;
            text-align: center;
            width: 13px;
            display: block;
            height: 15px;
            line-height: 15px;
            text-decoration:none;
            vertical-align:middle;
            font-family:Verdana;
            color: black;
        }

        .GridExpandButton
        {
            width: 11px;
            height: 11px;
            
            cursor: hand;
            text-align: center;
            display: inline-block;
            text-decoration:none;
            vertical-align:middle;
            background-image:url(Images/expand.gif);
            background-repeat:no-repeat;
        }

        .GridCollapseButton
        {
            width: 11px;
            height: 11px;
            line-height:0px;
            cursor: hand;
            text-align: center;
            display: block;
            text-decoration:none;
            vertical-align:middle;
            background-image:url(Images/collapse.gif);
            background-repeat:no-repeat;
        }