Applescript Maximize Window

dependent. One application may set the green maximize button to make the window fit the size of the foremost document, while another application may set the maximize button to stretch the window to fill the screen, while yet another may set the button to return the window to a default size. ...

and I like to make it smaller to have a finder window or something open above or below it. If I get a message I hear the little tone and can just look at my right monitor to see who it is from. ...