请问关于clientTop和offsetTop等表示位置大小的属性区别联系

<body><script>
var strInfo="";
strInfo+="\r\n网页可见区域宽:"+document.body.clientWidth;
strInfo+="\r\n网页可见区域高:"+document.body.clientHeight;
strInfo+="\r\n网页可见区域宽:"+document.body.offsetWidth+"(包括边线的宽)";
strInfo+="\r\n网页可见区域高:"+document.body.offsetHeight+"(包括边线的宽)";
strInfo+="\r\n网页正文全文宽:"+document.body.scrollWidth;
strInfo+="\r\n网页正文全文高:"+document.body.scrollHeight;
strInfo+="\r\n网页被卷去的高:"+document.body.scrollTop;
strInfo+="\r\n网页被卷去的左:"+document.body.scrollLeft;
strInfo+="\r\n网页正文部分上:"+window.screenTop;
strInfo+="\r\n网页正文部分左:"+window.screenLeft;
strInfo+="\r\n屏幕分辨率的高:"+window.screen.height;
strInfo+="\r\n屏幕分辨率的宽:"+window.screen.width;
strInfo+="\r\n屏幕可用工作区高度:"+window.screen.availHeight;
strInfo+="\r\n屏幕可用工作区宽度:"+window.screen.availWidth;
window.confirm(strInfo);
</script>