var coolw=615
var coolh=415
var triboy=window.open("XXX.htm","triboy","width="+coolw+",height="+coolh+",fullscreen=1,toolbar=0,
location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0")
triboy.resizeTo(coolw,coolh)
triboy.moveTo(Math.ceil((window.screen.width-coolw)/2),Math.ceil((window.screen.height-coolh)/2))
if (history.length>0)history.back(1)elselocation.replace("about:blank")

    将js以上代码放在网站的首页之中，最好不要再放任何其它代码，将代码中的“XXX.htm”换成网站实际的首页，就成了一个无边窗口的效果。大家可以试试.