Remove underline in Calendar cotrol

[jackparsana]

<asp:Calendar ID="cal" runat="server" NextPrevFormat="FullMonth" OnDayRender="cal_DayRender"
                    OnSelectionChanged="cal_SelectionChanged" CssClass="maincalander" CellSpacing="5">
                    <SelectedDayStyle CssClass="selectedday" />
                    <TodayDayStyle BorderColor="Black" BorderWidth="1px" Font-Bold="true" Font-Underline="false" />
                    <OtherMonthDayStyle ForeColor="#999999" Font-Underline="false" />
                    <NextPrevStyle CssClass="nextprevstyle" Font-Underline="false" VerticalAlign="Bottom" />
                    <DayHeaderStyle CssClass="dayheader" />
                    <TitleStyle BackColor="White" Font-Bold="True" Font-Size="12px" ForeColor="#333399" />
                </asp:Calendar>





--------css---------


.maincalander 
{
    font-family:verdana,tahoma,helvetica ;
    font-size: 11px;
    color:Black;
    text-decoration:none;
    width:250px;
}

.selectedday
{
    background-color:Maroon;
    text-decoration:none;
    color:Red;
}

.disbtn 
{
    background-color:wheat;
    border:#000 solid 1px;

}
.dayheader 
{
    font-size: 12px;
    color:;
    font-weight:bold;
}
.nextprevstyle 
{
    font-family:verdana,tahoma,helvetica ;
    font-size: 11px;
    color:Aqua;
}

please help me to remove underline. in this code from calender control.
in vs2008.

thanks in advance

jack