This centers the "A" below the image:
<div style="text-align:center">
<asp:Image ID="Image1" runat="server" ImageUrl="~/Images/opentoselect.gif" />
<br />
A
</div>
That is ASP.Net and it would render the HTML as:
<div style="text-align:center">
<img id="Image1" src="Images/opentoselect.gif" style="border-width:0px;" />
<br />
A
</div>