var box1=document.getElementById("box1");
             var box2=document.getElementById("box2");
             s = " 网页可见区域宽："+document.body.clientWidth ;
             console.log(s);//1536
             s = " 网页可见区域高："+document.body.clientHeight;
             console.log(s);//400
             s = " 网页可见区域宽(包括边线和滚动条的宽)："+document.body.offsetWidth
             console.log(s);//1536
             s = " 网页可见区域高(包括边线的宽)："+ document.body.offsetHeight;
             console.log(s);//400
             s = " 网页正文全文宽："+ document.body.scrollWidth;
             console.log(s);//1536
             s = " 网页正文全文高：" +document.body.scrollHeight;
             console.log(s);//759
             s = " 网页被卷去的高(ff)：" +document.body.scrollTop;
             console.log(s);//0
             s = " 网页被卷去的高(ie)："+ document.documentElement.scrollTop;
             console.log(s);//0
             s = " 网页被卷去的左：" +document.body.scrollLeft;
             console.log(s);//0
             s = " 网页正文部分上："+ window.screenTop;
             console.log(s);//0
             s = " 网页正文部分左：" +window.screenLeft;
             console.log(s);//0
             s = " 屏幕分辨率的高：" +window.screen.height;
             console.log(s);//864
             s = " 屏幕分辨率的宽：" +window.screen.width;
             console.log(s);//1536
             s = " 屏幕可用工作区高度：" +window.screen.availHeight;
             console.log(s);//824
             s = " 屏幕可用工作区宽度：" +window.screen.availWidth;
             console.log(s);//1536
             s = " 你的屏幕设置是(位彩色) " +window.screen.colorDepth ;
             console.log(s);//24
             s = " 你的屏幕设置(像素/英寸) " +window.screen.deviceXDPI ;
             console.log(s);//undefined