mirror installation
I want to install a mirror and want it to be glued in place. I want the light fixture to be mounted on top of the mirror. Is this possible and is there a special glue that will not distroy the mirror back and attatch it to the drywall. thanks

Try finding a product called
Try finding a product called Nail Power Mirror Mastic. It creates a permanent bond to most types of material. I think Lowes has it.
There's also a product called PL Mirror Mastic. Either way, you'll have to have a bracing system in place to hold the mirror while the mastic cures, 48-72 hours.