始终显示在右下角的链接提示框_层和布局特效

这个功能可以叫做右下角弹窗，也可以称为右下角的链接提示框，当你的鼠标移动到网页的文字链接或图片上的时候，网页的右下角会弹出一个基于层的提示窗口，说明该链接或图片的含义，算是一种链接提示效果。

<!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>
<meta http-equiv="Content-Type" mrc="text/html; charset=gb2312" />
<title>JavaScript实现网页右下角的提示框-www.mb5u.com</title>
<script type="text/javascript">
var titleToNote = {
 // mb5u.com
 elements : ['a', 'img'],
 setup : function(){
 if(!document.getElementById || !document.createElement) return;
   var div = document.createElement("div");
   div.setAttribute("id", "title2note");
   document.getElementsByTagName("body")[0].appendChild(div);
   document.getElementById("title2note").style.display = "none";
   for(j=0;j<titleToNote.elements.length;j++){
     for(i=0;i<document.getElementsByTagName(titleToNote.elements[j]).length;i++){
       var el = document.getElementsByTagName(titleToNote.elements[j])[i];
       if(el.getAttribute("title") && el.getAttribute("title") != ""){
         el.onmouseover = titleToNote.showNote;
         el.onmouseout = titleToNote.hideNote;
       }
     }
   }
 },
 showNote : function()
 {
   document.getElementById("title2note").innerHTML = this.getAttribute("title");
   this.setAttribute("title", "");
   document.getElementById("title2note").style.display = "block";
 },
 hideNote : function()
 {
   this.setAttribute("title", document.getElementById("title2note").innerHTML);
   document.getElementById("title2note").innerHTML = "";
   document.getElementById("title2note").style.display = "none";
 }
} 
var oldonload=window.onload;if(typeof window.onload!='function'){
window.onload=titleToNote.setup;
}else{window.onload=function(){oldonload();
titleToNote.setup();}}
</script>
	
<style type="text/css" media="screen">
		#title2note{
	position: fixed;
	z-index: 2;
	bottom: 0;
	right: 0;
	width: 20em;
	margin: 1em;
	padding: 7px 5px 7px 10px;
	font: 12px/1.2em "Lucida Console", "Courier New", monospace;
	text-align: left;
	color: #111;
	background-color: #FFFFB4;
	border: 1px solid #111;
}
* html #title2note{
position: absolute;
}
#title2note[id]{
	position: fixed;
}
	
	body{
		background-repeat:no-repeat;
		font-family: Trebuchet MS, Lucida Sans Unicode, Arial, sans-serif;
		font-size:0.9em;
		line-height:130%;
		text-align:center;
		background-color: #E2EBED;
		margin:0px;
	}
	
	#mainContainer{
		width:760px;
		text-align:left;
		background-color:#FFF;
		padding:10px;
	}
	
	img{
		border:0px;
	}
	a{
		color:#F00;
	}
	</style>
</head>
<body>

<div id="mainContainer">
<h1>右下角弹窗</h1>
<h2>Example:</h2>
<p>becomes <strong><a href="#" title="b&auml;&auml;h">TestLink</a></strong> <em><- Hover this and look on the bottom right.</em></p>
<h2>Examples</h2>
<p><img src="/jscss/demoimg/wall_s6.jpg" alt="TestImage" title="This picture is from mb5u.com an island at the west coast of Norway"><br><em><- Hover this image.</em><br><br></p>
<p><strong><a href="#" title="This is just a link">TestLink</a></strong> <em><- Hover this link.</em><br><br></p>
<p><em>Should work in browsers with support for DOM and position:fixed and also in IE 5+.</em></p>
<p>Tested in: Firefox, IE5+, Opera7</p>
</div>
</body>
</html>

所属频道：层和布局特效/更新时间：2012-11-17

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