s += "网页可见区域宽："+ document.body.clientWidth;
s += "网页可见区域高："+ document.body.clientHeight;
s += "网页可见区域高："+ document.body.offsetWeight +" (包括边线的宽)";
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;