实现鼠标经过超链时的提示图层

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一、
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<script>
var oPopup = window.createPopup();
function rdl_doClick(){
var oMessage=document.all("oMessage");
with (oPopup.document.body) {
style.backgroundColor="lightyellow";
style.border="solid black 1px";
innerHTML=oMessage.value;
}
oPopup.show(70, 70, 180, 60);
}
</script>
<input id=oMessage type=hidden size=40 value="点击弹出窗口外面的区域关闭它。">
<br><br>
<a href="#" onmouseover="rdl_doClick()" onmouseout="oPopup.hide();">显示弹出窗口 </a>
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二、
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<STYLE type=text/css>BODY {
MARGIN-TOP: 0px; FONT-SIZE: 9pt; MARGIN-LEFT: 4px; MARGIN-RIGHT: 0px; FONT-FAMILY: "宋体"
}
A {
FONT-WEIGHT: 400; FONT-SIZE: 13px; COLOR: black; TEXT-DECORATION: none
}
A:hover {
FONT-WEIGHT: 400; FONT-SIZE: 13px; COLOR: red; TEXT-DECORATION: underline
}
A:active {
FONT: 9pt "宋体"; CURSOR: hand; COLOR: #ff0033
}
</style>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>

<body>

<script>
function show(tips,flag,url){
var my_tips=document.all.mytips;
if(flag){
my_tips.style.display="";
if (url!=null){my_tips.innerHTML="<img src='"+url+"'align=left>"+tips;}
else{ my_tips.innerHTML=tips;}
my_tips.style.left=event.clientX+10;
my_tips.style.top=event.clientY+10;
}
else
{
my_tips.style.display="none";
}
}
</script>

<a href="#" tips="自定义提示" onmousemove=show(this.tips,1) onmouseout=show(this.tips,0)>测试链接</a>
<a href="#" tips="又一个自定义提示" onmousemove=show(this.tips,1,'http://be10.ods.org/51js/images/standard/online_member.gif') onmouseout=show(this.tips,0)>测试链接</a>
<a href="#" tips="中华人民共和国中华人民共和国自定义提示" onmousemove=show(this.tips,1,'http://be10.ods.org/51js/images/standard/online_moderator.gif') onmouseout=show(this.tips,0)>测试链接</a>

<div id=mytips style="position:absolute;width:150;height:16;border:1 gray solid;font-size:9pt;background-color:#ffffff;color:red;display:none;filter: progid:DXImageTransform.Microsoft.Shadow(color=#999999,direction=135,strength=3);">
</div>

</body>
</html>
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三、
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<html>
<head>
<script Language="JavaScript">
//***********默认设置定义.*********************
tPopWait=50;//停留tWait豪秒后显示提示。
tPopShow=5000;//显示tShow豪秒后关闭提示
showPopStep=20;
popOpacity=99;

//***************内部变量定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;

document.write("<style type='text/css'id='defaultPopStyle'>");
document.write(".cPopText { background-color: #F8F8F5;color:#000000; border: 1px #000000 solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");
document.write("</style>");
document.write("<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");

function showPopupText(){
var o=event.srcElement;
MouseX=event.x;
MouseY=event.y;
if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
if(o.dypop!=sPop) {
sPop=o.dypop;
clearTimeout(curShow);
clearTimeout(tFadeOut);
clearTimeout(tFadeIn);
clearTimeout(tFadeWaiting);
if(sPop==null || sPop=="") {
dypopLayer.innerHTML="";
dypopLayer.style.filter="Alpha()";
dypopLayer.filters.Alpha.opacity=0;
}
else {
if(o.dyclass!=null) popStyle=o.dyclass
else popStyle="cPopText";
curShow=setTimeout("showIt()",tPopWait);
}

}
}

function showIt(){
dypopLayer.className=popStyle;
dypopLayer.innerHTML=sPop;
popWidth=dypopLayer.clientWidth;
popHeight=dypopLayer.clientHeight;
if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
else popLeftAdjust=0;
if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
else popTopAdjust=0;
dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
dypopLayer.style.filter="Alpha(Opacity=0)";
fadeOut();
}

function fadeOut(){
if(dypopLayer.filters.Alpha.opacity<popOpacity) {
dypopLayer.filters.Alpha.opacity+=showPopStep;
tFadeOut=setTimeout("fadeOut()",1);
}
else {
dypopLayer.filters.Alpha.opacity=popOpacity;
tFadeWaiting=setTimeout("fadeIn()",tPopShow);
}
}

function fadeIn(){
if(dypopLayer.filters.Alpha.opacity>0) {
dypopLayer.filters.Alpha.opacity-=1;
tFadeIn=setTimeout("fadeIn()",1);
}
}
document.onmouseover=showPopupText;
</script>
</head>
<BODY>
<a href="#" title="我想请问斑竹？<br>作者：农民<br>发表于2002-6-3 20:17:16<br>最后跟贴：呵呵，是住我们......">我想请问斑竹？</a>接着前面的
</body>
</html>
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四、
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<SCRIPT language=JavaScript1.2>

</script>
<img src="http://www.blueidea.com/img/common/logo.gif" alt="blue！dea welcome you">
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