The Issue is when ever i click to the Dashboard icon or i click to the logout button it replicate in the iframe 
i am done this through this article .. i am setting the logout function in 
public ActionResult Logout()
 {
return RedirectToAction("after_logout");
 }
public ActionResult after_logout()
{
 /Response.Redirect("/Home/Index");
 // return View();
}
 
It redirects me but Again my Index page Open in Iframe