does anyone have a idea how to remove the glass from the standard Windows.

it apear the glass is held at the corners by this triangle type of bar's .. but i cant get to remove them .. and not want to destroy them too ..

also the window must be somehow fixed on the top too ..

is there any way to get this out without remove the whole frame ?

That doesn't look like a "standard window" to me. Maybe get a standard window and have it properly installed. (?)

No matter what the design of the frame, the glass will have been fitted last.

Remove the rubber strips, get yourself a couple of suction cups, and I'll bet the glass comes right out.