I took a trip out to one of my caches to sot it out as a finder had reported water ingression.

I have recently bought a Garmin eTrex Camo and I dont have a holder for it for the car so I stood it up between the dashboard and windscreen. Unfortunately the flexing of the car's body as it went over the bumps in the road has caused the GPS to be compressed and a crack has appeared across the screen

It would be nice if I could fix the screen to stop water getting in, but I am a bit nervous of using glues since I used a glue on a mobile phone battery ate its way into the battery :

Anyone got any ideas?

Thanks