protected void Page_Load(object sender, EventArgs e)
{
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.UtcNow.AddHours(-1));
Response.Cache.SetNoStore();
Session.Clear();
Navbar myMasterPage = (Navbar)Page.Master;
HyperLink myLink = (HyperLink)myMasterPage.FindControl("reg");
myLink.Visible = false;
myLink = (HyperLink)myMasterPage.FindControl("feed");
myLink.Visible = false;
myLink = (HyperLink)myMasterPage.FindControl("upload");
myLink.Visible = false;
myLink = (HyperLink)myMasterPage.FindControl("edit");
myLink.Visible = false;
}