public static void DeleteDocument(CMSDataContext db, CMSImageDataContext idb, int id, int docid)
{
var m = db.MemberDocForms.SingleOrDefault(mm => mm.Id == docid && mm.PeopleId == id);
idb.DeleteOnSubmit(m.SmallId);
idb.DeleteOnSubmit(m.MediumId);
idb.DeleteOnSubmit(m.LargeId);
db.MemberDocForms.DeleteOnSubmit(m);
db.SubmitChanges();
idb.SubmitChanges();
}