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js+css使DIV始终居于屏幕中间 左下 左上 右上 右下的代码集合

2011-03-10 00:00 621 查看
<!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/ 
<!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"> 
<HEAD> 
<TITLE>随滚动条移动的层 </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" class="div" 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" class="div" 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" class="div" 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" class="div" 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" class="div" 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>
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