tab container help

<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0" UseVerticalStripPlacement="true"
    VerticalStripWidth="100px"><cc1:TabPanel ID="TabPanel1" runat="server" HeaderText="TabPanel1"
        Height="350"><ContentTemplate>
            Tab 1</ContentTemplate></cc1:TabPanel><cc1:ID="TabPanel2" runat="server" HeaderText="TabPanel2" ToolTip="Tooltip_TabPanel2"
        Height="350"><ContentTemplate>
            Tab 2</ContentTemplate></cc1:TabPanel></cc1:TabContainer>

how to make the side button tab panel 1 and tab panel 2 become bigher, how to chg the size of button