-- Given a spell's full name and Booktype (BOOKTYPE_SPELL or BOOKTYPE_PET), return spell's book numerical ID.
function RDXSS.GetSpellBookId(sname, bkt)
    if not sname then return nil; end
    if not bkt then return nil; end
    for i = 1, MAX_SKILLLINE_TABS do
        local name, texture, offset, numSpells = GetSpellTabInfo(i);
        if not name then break; end
        for s = offset + 1, offset + numSpells do
            if (sname == GetSpellBookItemName(s,bkt)) then
                return s;
            end
        end
    end
    return 0;
end