Asp.net Form view Pager Template First Record

How do I set the formview pager template to not show the text ' Previous record ' when it is the first record or 'Next Record/ then it is the last record.

<PagerTemplate>
        <div style="background-color: #66CCFF; color: #000000">Click below to see previous Digital Literacy Tests</div>
        <div style="float:left">
        Page: <%# fvNum.PageIndex + 1 %>
        </div>

        <div style="float:right;white-space:nowrap">
        <asp:LinkButton
            id="lnkPrevious"
            Text="Previous Test"
            CommandName="Page"
            CommandArgument="Prev"
            Runat="server" />
        |
        <asp:LinkButton
            id="lnkNext"
            Text="Next Test"
            CommandName="Page"
            CommandArgument="Next"
            Runat="server" />
        </div>
        </PagerTemplate>

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