[BabyRay]

First of all thanks for your help!
Since I have no idea about LUA, I have all my scripts here from the thread. And here, thanks to all!

I changed the following

From this

    _G["ChatFrame1"]:Show()
    _G["ChatFrame3"]:Show()
    _G["ChatFrame1ButtonFrame"]:Show()
    _G["ChatFrame3ButtonFrame"]:Show()
    _G["ChatFrameMenuButton"]:Show()
    _G["GeneralDockManager"]:Show()
    _G["FriendsMicroButton"]:Show()
else
    _G["ChatFrame1"]:Hide()
    _G["ChatFrame3"]:Hide()
    _G["ChatFrame1ButtonFrame"]:Hide()
    _G["ChatFrame3ButtonFrame"]:Hide()
    _G["ChatFrameMenuButton"]:Hide()
    _G["GeneralDockManager"]:Hide()
    _G["FriendsMicroButton"]:Hide()

to this

    ChatFrame1:Hide()
    ChatFrame3:Hide()
    ChatFrame1ButtonFrame:Hide()
    ChatFrame3ButtonFrame:Hide()
    ChatFrameMenuButton:Hide()
    GeneralDockManager:Hide()
    FriendsMicroButton:Hide()
else
    ChatFrame1:Show()
    ChatFrame3:Show()
    ChatFrame1ButtonFrame:Show()
    ChatFrame3ButtonFrame:Show()
    ChatFrameMenuButton:Show()
    GeneralDockManager:Show()
    FriendsMicroButton:Show()

The line unfortunately I could not find it. Possibly I am not yet fully awake. But I will look over it again

for i = 1, 10 do
     _G["ChatFrame"..i]:SetFont("Fonts\\FRIZQT__.ttf", 16, "OUTLINE")
end

Hope this is right, now.
Button labeled as 'Hide'

OnLoad:

self.openEvents = {
    GOSSIP_SHOW = true,
    BANKFRAME_OPENED = true,
    GUILDBANKFRAME_OPENED = true,
}
 
if oEvents[event] then
    ChatFrame1:Hide()
    ChatFrame3:Hide()
    ChatFrame1ButtonFrame:Hide()
    ChatFrame3ButtonFrame:Hide()
    ChatFrameMenuButton:Hide()
    GeneralDockManager:Hide()
    FriendsMicroButton:Hide()
else
    ChatFrame1:Show()
    ChatFrame3:Show()
    ChatFrame1ButtonFrame:Show()
    ChatFrame3ButtonFrame:Show()
    ChatFrameMenuButton:Show()
    GeneralDockManager:Show()
    FriendsMicroButton:Show()
end

OnEvent:

if self.openEvents[event] then
 
if oEvents[event] then
    ChatFrame1:Show()
    ChatFrame3:Show()
    ChatFrame1ButtonFrame:Show()
    ChatFrame3ButtonFrame:Show()
    ChatFrameMenuButton:Show()
    GeneralDockManager:Show()
    FriendsMicroButton:Show()
else
    ChatFrame1:Hide()
    ChatFrame3:Hide()
    ChatFrame1ButtonFrame:Hide()
    ChatFrame3ButtonFrame:Hide()
    ChatFrameMenuButton:Hide()
    GeneralDockManager:Hide()
    FriendsMicroButton:Hide()
end