BGE GLSL- Room

BGE GLSL Project…made with blender 2.64…I have made use of two scripts. Mouselook & DOF… and bloom & mouselook for the Daytime.

I have made two scenes for the Room. Daytime And Nighttime ,i have made two different files for these two scenes. but i want to combine both two scenes into one file so that i can change the scenes with a just button or mouse-click. Is it possible?
Please help me out!

Please Check This Out…

daytime…
http://www.youtube.com/watch?v=ERgkMOnT72M

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