JavaScript判断窗口是否最小化的代码(跨浏览器)

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;
}