function wsfHistoryAdd(id)
{
    wsHistory.Add(id,
        wsfHistoryAddOnSucceeded,
        wsfHistoryAddOnFailed);
}
function wsfHistoryAddOnSucceeded(json){}
function wsfHistoryAddOnFailed(json){}
//---------------------------------------------------------------
function wsfHistoryDelete(id)
{
    wsHistory.Delete(id,
        wsfHistoryDeleteOnSucceeded,
        wsfHistoryDeleteOnFailed);
}
function wsfHistoryDeleteOnSucceeded(json){}
function wsfHistoryDeleteOnFailed(json){}
//---------------------------------------------------------------