<!DOCTYPE html>
<html>
<body>
<p>Use the "Tab" key to navigate the buttons.</p>
<form runat="server">
<asp:Button id="button1" TabIndex="4" Text="Button 1" runat="server" />
<asp:Button id="button2" TabIndex="3" Text="Button 2" runat="server" />
<asp:Button id="button3" TabIndex="1" Text="Button 3" runat="server" />
<asp:Button id="button4" TabIndex="2" Text="Button 4" runat="server" />
</form>
</body>
</html>