网页可见区域宽: document.body.clientWidth;
网页可见区域高: document.body.clientHeight;
网页可见区域宽: document.body.offsetWidth; 包括边线的宽;
网页可见区域高: document.body.offsetHeight;包括边线的宽;
网页正文全文宽: document.body.scrollWidth;
网页正文全文高: document.body.scrollHeight;
网页被卷去的高: document.body.scrollTop;
网页被卷去的左: document.body.scrollLeft;
网页正文部分上: window.screenTop;
网页正文部分左: window.screenLeft;
屏幕分辨率的高: window.screen.height;
屏幕分辨率的宽: window.screen.width;
屏幕可用工作区高度: window.screen.availHeight;
屏幕可用工作区宽度:window.screen.availWidth;
当前鼠标位置的X坐标:document.body.scrollLeft+event.clientX; 网页横向滚动条的左位置 + 事件源的X坐标
当前鼠标位置的Y坐标:document.body.scrollTop+event.clientY;
附以前收集的代码 作者枫岩
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="gb2312">
<head>
<head>
<title> 代码实例:获取页面滚动高度 scrollTop(For: IE5.0+、Firefox1.06+ ...) </title>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<meta name="author" content="枫岩,CnLei.y.l@gmail.com">
<meta name="copyright" content="http://www.cnlei.com" />
<meta name="description" content="获取页面滚动高度 scrollTop(For: IE5.0+、Firefox1.06+ ...)" />

<script type="text/javascript">...
var w3c=(document.getElementById)? true: false;
var agt=navigator.userAgent.toLowerCase();
var ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1) && (agt.indexOf("omniweb") == -1));


function IeTrueBody()...{
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}


function GetScrollTop()...{
return ie ? IeTrueBody().scrollTop : window.pageYOffset;
}

function getPageScroll()...{
var yScroll;

if (self.pageYOffset) ...{
yScroll = self.pageYOffset;

} else if (document.documentElement && document.documentElement.scrollTop)...{ // Explorer 6 Strict
yScroll = document.documentElement.scrollTop;

} else if (document.body) ...{// all other Explorers
yScroll = document.body.scrollTop;
}
arrayPageScroll = new Array('',yScroll)
return arrayPageScroll;
}

function getPageSize()...{
var xScroll, yScroll;

if (window.innerHeight && window.scrollMaxY) ...{
xScroll = document.body.scrollWidth;
yScroll = window.innerHeight + window.scrollMaxY;

} else if (document.body.scrollHeight > document.body.offsetHeight)...{ // all but Explorer Mac
xScroll = document.body.scrollWidth;
yScroll = document.body.scrollHeight;

} else ...{ // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
xScroll = document.body.offsetWidth;
yScroll = document.body.offsetHeight;
}
var windowWidth, windowHeight;

if (self.innerHeight) ...{ // all except Explorer
windowWidth = self.innerWidth;
windowHeight = self.innerHeight;

} else if (document.documentElement && document.documentElement.clientHeight) ...{ // Explorer 6 Strict Mode
windowWidth = document.documentElement.clientWidth;
windowHeight = document.documentElement.clientHeight;

} else if (document.body) ...{ // other Explorers
windowWidth = document.body.clientWidth;
windowHeight = document.body.clientHeight;
}
// for small pages with total height less then height of the viewport

if(yScroll < windowHeight)...{
pageHeight = windowHeight;

} else ...{
pageHeight = yScroll;
}

if(xScroll < windowWidth)...{
pageWidth = windowWidth;

} else ...{
pageWidth = xScroll;
}
arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight,xScroll,yScroll)
return arrayPageSize;
//return pageHeight;
}
</script>
</head>
<body>
<p style="height:250px;"> </p>
<p><a href="javascript:alert(GetScrollTop());">GetScrollTop()滚动条高度1</a></p>
<p><a href="javascript:alert(getPageScroll()[1]);">getPageScroll()[1]滚动条高度2</a></p>
<p><a href="javascript:alert(getPageSize()[0].toString()+'/'+getPageSize()[1].toString()+'/'+getPageSize()[2].toString()+'/'+getPageSize()[3].toString()+'/'+getPageSize()[4].toString()+'/'+getPageSize()[5].toString());">getPageSize()页面宽度,高度,窗口宽度,高度</a></p>
<p style="height:250px;"> </p>
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AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
</body>
</html>
