JS得到窗口高度

<SCRIPT   LANGUAGE="JavaScript"> 
var s = "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);
</SCRIPT>