JavaScript判断窗口是否最小化的代码(跨浏览器)

代码如下:
function isMinStatus() {
var isMin = false;
if (window.outerWidth != undefined) {
isMin = window.outerWidth <= 160 && window.outerHeight <= 27;
}
else {
isMin = window.screenTop < -30000 && window.screenLeft < -30000;
}
return isMin;
}