property workAreaWidth

This property returns the work area width. The work area is the portion of the screen not obscured by the system taskbar or by application desktop toolbars.

function screenInfo()
{
    var workAreaX = appUtils.workAreaX;
    var workAreaY = appUtils.workAreaY;
    var workAreaWidth = appUtils.workAreaWidth;
    var workAreaHeight = appUtils.workAreaHeight;
    shell.print("work area origin = (" + workAreaX + ", " + workAreaY + ")");
    shell.print("work area size = " + workAreaWidth + " x " + workAreaHeight);
}