Js 获取屏幕坐标值

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