如何定位div在屏幕某个位置，兼容多个浏览器

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "<a href="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" target="_blank">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</a>">

<html xmlns="<a href="http://www.w3.org/1999/xhtml" target="_blank">http://www.w3.org/1999/xhtml</a>">

<HEAD>

<TITLE>定位div在屏幕某个位置-兼容多个浏览器----https://www.duskjoy.com</TITLE>

<META HTTP-EQUIV="Content-Type" CONTENT="text/html" charset="gb2312">

</HEAD>

<style>

<!--

.div{position: absolute; border: 2px solid red; background-color: #EFEFEF; line-height:90px; font-size:12px; z-index:1000;

}

-->

</style>

<BODY>

<div id="Javascript.Div1" style="width: 240px; height:90px" align="center">正中...</div>

<SCRIPT LANGUAGE="JavaScript">

function sc1(){

     document.getElementById("Javascript.Div1").style.top=(document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2)+"px";

     document.getElementById("Javascript.Div1").style.left=(document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2)+"px";

}

</SCRIPT>

<div id="Javascript.Div2" style="width: 240px; height:90px" align="center">左上...</div>

<SCRIPT LANGUAGE="JavaScript">

function sc2(){

     document.getElementById("Javascript.Div2").style.top=(document.documentElement.scrollTop)+"px";

     document.getElementById("Javascript.Div2").style.left=(document.documentElement.scrollLeft)+"px";

}

</SCRIPT>



<div id="Javascript.Div3" style="width: 240px; height:90px" align="center">左下...</div>

<SCRIPT LANGUAGE="JavaScript">

function sc3(){

     document.getElementById("Javascript.Div3").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div3").offsetHeight)+"px";

     document.getElementById("Javascript.Div3").style.left=(document.documentElement.scrollLeft)+"px";

}

</SCRIPT>



<div id="Javascript.Div4" style="width: 240px; height:90px" align="center">右上...</div>

<SCRIPT LANGUAGE="JavaScript">

function sc4(){

     document.getElementById("Javascript.Div4").style.top=(document.documentElement.scrollTop)+"px";

     document.getElementById("Javascript.Div4").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div4").offsetWidth)+"px";

}

</SCRIPT>



<div id="Javascript.Div5" style="width: 240px; height:90px" align="center">右下...</div>

<SCRIPT LANGUAGE="JavaScript">

function sc5(){

     document.getElementById("Javascript.Div5").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div5").offsetHeight)+"px";

     document.getElementById("Javascript.Div5").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div5").offsetWidth)+"px";

}

</SCRIPT>

<SCRIPT LANGUAGE="JavaScript">

<!--

function scall(){

     sc1();sc2();sc3();sc4();sc5();

}

window.onscroll=scall;

window.onresize=scall;

window.onload=scall;

//-->

</SCRIPT>

<div style="position: absolute; top: 0px; left: 0px; width: 10000px; height: 4000px;"></div>

</BODY>

</HTML>



</div>