js获取网页屏高 屏宽

<SCRIPT LANGUAGE="JavaScript">
            <!--
            //document.body.scrollTop          滚动条的上端距离
            //document.body.scrollLeft         滚动条的左端距离            

            window.onload = function() {
            
                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(ff)："+ document.body.scrollTop;
                s += " 网页被卷去的高(ie)："+ document.documentElement.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>