Autohotkey Borderless

Loop
{
	WinWait, ahk_class Valve001
	IfWinExist
	{
		WinSet, Style, -0xC00000 ; remove the titlebar and border(s)
		WinMove, , , 0, 0, 1920, 1080 ; move the window to 0,0 and reize it to 1280x1024
	}
	Sleep 1000 ; 1 Second
}
return