Problem with GUIs turning visible and/or not. ?

I tried to make it so whenever you press a button, some pictures appear and the shop button disappear. The shop button does disappear, but the pictures (and text buttons) WILL NOT APPEAR! This is very annoying, can someone tell me whats wrong with the script?

local a = 0
local b = script.Parent.ExtraObby
local c = script.Parent.ExtraStages
local d = script.Parent.MoreSoon
local e = script.Parent.Sword
local f = script.Parent.VIP
local g = script.Parent["skip stage"]
local h = script.Parent.tips
local i = script.Parent
script.Parent.MouseButton1Click:connect(function()
	a = a + 1
	if a == 1 then
		b.Visible = true
		c.Visible = true
		d.Visible = true
		e.Visible = true
		f.Visible = true
		g.Visible = true
		h.Visible = true
		i.Visible = false
	end
	if a == 2 then
		b.Visible = false
		c.Visible = false
		d.Visible = false
		e.Visible = false
		f.Visible = false
		g.Visible = false
		h.Visible = false
		i.Visible = true
		a = 0
	end
end)



while wait(2) do
	print("a is equal to " .. a .."!")
end

The lettered variables are inside your button. Children will follow the Visible aspect of its parent. Aka, when you make the button invisible, it'll automatically make all its children hide as well. Put all your buttons/pictures (except for the shop button) in a seperate frame, then control (visible not visible) the frame instead.