protected void GetNumberOfViewed()
{
string userid = Session["userid"].ToString();
int numberOfVisits = Usr.GetNumberOfReceivedMssg(userid);
int pagesNumberMax = (int)Math.Ceiling((decimal)numberOfVisits / mssgPerPage);
int page = int.Parse(CurrPage.Value);
Usr.BuildPagination(links, pagesNumberMax, page, FillSkrzynka);
}