js获取屏幕（设备）宽高

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