HTML - Why Does Rewrite Relative Paths For Runat=server Anchor Controls

I have my UserControls in a ~/Controls folder in my solution:

/Controls/TheControl.ascx

If specify the following:

<a id="theId" runat="server" href="./?pg=1">link text</a>

ASP.Net seems to want to rewrite the path to point to the absolute location. For example, If the control is on [URL] the link href will be rewritten to read

<a id="munged_theId" href="../../Controls/?pg=1>link text</a>

Why does Asp.Net rewrite these control paths, and is there an elegant way to fix it?

I just want the anchor control to spit out exactly what I tell it to!!! Is that so hard?

EDIT:

I've basically done what Kelsey suggested. I knew I could do it this way, but I don't like adding markup in my code when I want something relatively simple. At least it solves the problem:

Aspx page:

<asp:PlaceHolder ID="ph" runat="server"></asp:PlaceHolder>

Code-behind:

var anchor = new HtmlGenericControl("a") { InnerText = "Previous" + " " + PageSize) };
anchor.Attributes["href"] = "?pg=" + (CurrentPage - 1);
anchor.Attributes["class"] = "prev button";
ph.Controls.Clear();
ph.Controls.Add(anchor);

As you can see by the amount of code needed for what is essentially supposed to be be a simple and light-weight anchor, it's not the most optimal solution. I know I could use a Literal but I figured this was cleaner as I'm adding more than one anchor.