javascript获取网页宽高，屏幕宽高，屏幕分辨率等

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<script>
    var  s = "";
    s += "
网页可见区域宽："+ document.body.clientWidth;
    s += "
网页可见区域高："+ document.body.clientHeight;
    s += "
网页可见区域宽："+ document.body.offsetWidth  +" (包括边线和滚动条的宽)";
    s += "
网页可见区域高："+ document.body.offsetHeight +" (包括边线的宽)";
    s += "
网页正文全文宽："+ document.body.scrollWidth;
    s += "
网页正文全文高："+ document.body.scrollHeight;
    s += "
网页被卷去的高："+ document.body.scrollTop;
    s += "
网页被卷去的左："+ document.body.scrollLeft;
    s += "
网页正文部分上："+ window.screenTop;
    s += "
网页正文部分左："+ window.screenLeft;
    s += "
屏幕分辨率的高："+ window.screen.height;
    s += "
屏幕分辨率的宽："+ window.screen.width;
    s += "
屏幕可用工作区高度："+ window.screen.availHeight;
    s += "
屏幕可用工作区宽度："+ window.screen.availWidth;
    s += "
你的屏幕设置是 "+ window.screen.colorDepth +" 位彩色";
    s += "
你的屏幕设置 "+ window.screen.deviceXDPI +" 像素/英寸";
    alert(s);
</script>
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