Other Plexi/Glass retaining methods?

[ras2a]

I think this has been covered to some degree elsewhere.  But how do you guys retain your plexi/glass in front of your Monitor/TV?

I was initially going to use plexi, drill through this and fix it to 4 batton's on the insides of my cab using countersunk screws.  But...after reading that glass is so much better, I've decided to go with gray tinted glass.  So what would be the best way to hold this in place?  Maybe I could sandwich the glass between some thinner beading on the outside edge ?

I know other methods have been covered including glass retainers (although some look a bit cak), but was looking for a more 'invisible' solution.

thanks a lot in advance