Door exterior molding / trim coming off

Does anyone have a tip or trick for reattaching the body colored trim strips that run along the outside of the front and sliding doors? 2 of mine on my 2006 LE are coming off and I'd like to reattach them before I loose them entirely. This is what I am refering to:

It looks like there are clips involved but I can't find any info on which type of clip is used.

Thanks!