Driver's side mirror came off

[Ms Grumpy]

Ok, I was driving my Astro van yesterday on the expressway when I noticed that my side view mirror was vibrating. You know, it looked like someone was shaking the mirror, and it was so annoying. I figured I would find out what was going on when I got home.

Less than a minute later I look at the mirror and it is coming off, I open my window and grab the actual mirror just as it let go.

So my question is, what do I use to clean the old "gunk" off the side view mirror on the van and on the back of the glass mirror ? Also what kind of adhesive to I use to put the mirror back on ? The temps are not supposed to be above low 60's for the next week, and I hate driving without my side mirror, especially in a full size van.