How To Show Page In Contentcontrol On Masterpage

I'm developing af site, with at login on the masterpage.

On my masterpage I have this (Of course there is a lot of other HTML)

<div id="logindisplay">
<% Html.RenderPartial("LogOnUserControl"); %>
</div>

And here my LogOnUserControl

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %>
<%
if (Request.IsAuthenticated)
{
%>
Welcome <b>
<%: Page.User.Identity.Name %></b>! [
<%: Html.ActionLink("Log Off", "LogOff", "Account") %>
]
<%
}
else
{
%>
<!--Here i want to show my LogOn.Aspx page-->
<%: Html.ActionLink("Log On", "LogOn", "Account") %>
<%
}
%>

Then I have LogOn.aspx, that i want to show in the <div> "logindisplay" on masterpage, if no user is logged ind

[code]....