Camera manipulation with gui?

This is a problem to me.. this gui is intended to serve as a character selection. When you click the button your camera position will change to the target camera. This works fine, the problem is when i click another button the script on previous button is still working which mess up the camera. i tried disabling the script on textbutton1 but it will not work..

TextButton1 script

function click()
local target = game.Workspace.CHAR1 -- The target model
local camera = game.Workspace.CurrentCamera
camera.CameraSubject = target
local angle = 0 

while wait() do    
    camera.CoordinateFrame = CFrame.new(4.5, 4, 6.5)  ---- Position of camera                
        * CFrame.Angles(0, angle, 0)                          
        * CFrame.new(0, 0, 0)          
end
end
script.Parent.MouseButton1Down:connect(click)

button 2

function click()
local target = game.Workspace.CHAR2 -- Target model
local camera = game.Workspace.CurrentCamera
camera.CameraSubject = target
local angle = 0 

while wait() do    
    camera.CoordinateFrame = CFrame.new(4.5, 4, -7.5)  --- camera position              
        * CFrame.Angles(0, angle, 0)                          
        * CFrame.new(0, 0, 0)          
end
end
script.Parent.MouseButton1Down:connect(click)