Metal strip around blazer S-10 back window
 

Hi, I'm upgrading my 1991 blazer S-10. The metal strip around the window
(tinted) is icky and I want to replace it. I can buy a new one, but don't know
how to get the old one off without possible damage to the window. The bottom
part is practically falling off, but the side-top-side (a continuous piece) is
glued on? Any suggestions?