代码简介：
真正的JavaScript鼠标放上加载大图的效果，唯一不爽的地方是没有Loading，在淘宝网的商品列表中有这样的效果，有些朋友很想要的效果，但是却不知该如何形容，本放大还带有渐入渐出动画，如果不想要的话，可以去掉哦，这样代码就更精简了。
代码内容：
View Code
<!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>JavaScript实现鼠标放上动画加载大图的代码_网页代码站(www.webdm.cn)</title>
<style>
*{ padding:0; margin:0;}
html { overflow:-moz-scrollbars-vertical; }
body{ word-break:break-all; text-align:left; background:#C0C0C0; color:#4E4E4E;}
ul,li{ list-style:none;}
a{ color:#333; text-decoration:none;}
a:hover{ color:#ff722d; text-decoration:none;}
img{ border:0;}
a img,a:hover img{ border:0;}
.latestWeb{ 560px; margin:10px auto 0;}
.latestWeb ul{ overflow:hidden; _height:1%;}
.latestWeb li{ float:left; border:1px solid #EBEAEA; 150px; padding:17px 0 14px 22px; margin:14px 18px 0 0; }
.trans_msg
{
filter:alpha(opacity=100,enabled=1) revealTrans(duration=.2,transition=1) blendtrans(duration=.2);
}
div.bodycontent{font-family:Arial, Helvetica, sans-serif;padding:0 10px 10px 13px;color:#555;line-height:22px;text-align:justify;text-justify:inter-ideograph;}
div.bodycontent ul{margin-left:0px}
</style>
<script language="javascript">
function toolTip(str) {
}
</script>
</head>
<body>
<div class="latestWeb">
<ul>
<li>
<div><a href="http://www.webdm.cn"><img src='http://www.webdm.cn/images/wall1_s.jpg' onMouseOver="toolTip('<img src=http://www.webdm.cn/images/wall1.jpg>')"
onMouseOut="toolTip()"></a></div>
</li>
<li>
<div><a href="http://www.webdm.cn"><img src='http://www.webdm.cn/images/wall2_s.jpg' onMouseOver="toolTip('<img src=http://www.webdm.cn/images/wall2.jpg>')"
onMouseOut="toolTip()"></a></div>
</li>
</ul>
</div>
<script language="javascript">
function getViewportHeight() {
if (window.innerHeight!=window.undefined) return window.innerHeight;
if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
if (document.body) return document.body.clientHeight;
return window.undefined;
}
function getViewportWidth() {
if (window.innerWidth!=window.undefined) return window.innerWidth;
if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth;
if (document.body) return document.body.clientWidth;
return window.undefined;
}
function getScrollTop() {
if (self.pageYOffset)
{
return self.pageYOffset;
}
else if (document.documentElement && document.documentElement.scrollTop)
{
return document.documentElement.scrollTop;
}
else if (document.body)
{
return document.body.scrollTop;
}
}
function getScrollLeft() {
if (self.pageXOffset)
{
return self.pageXOffset;
}
else if (document.documentElement && document.documentElement.scrollLeft)
{
return document.documentElement.scrollLeft;
}
else if (document.body)
{
return document.body.scrollLeft;
}
}
var rT=true;//允许图像过渡
var bT=true;//允许图像淡入淡出
var tw=150;//提示框宽度
var endaction=false;//结束动画
var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
offsetX = 10;
offsetY = 20;
var toolTipSTYLE="";
function initToolTips()
{
tempDiv = document.createElement("div");
tempDiv.id = "toolTipLayer";
tempDiv.style.position = "absolute";
tempDiv.style.display = "none";
document.body.appendChild(tempDiv);
if(ns4||ns6||ie4)
{
if(ns4) toolTipSTYLE = document.toolTipLayer;
else if(ns6) toolTipSTYLE = document.getElementById("toolTipLayer").style;
else if(ie4) toolTipSTYLE = document.all.toolTipLayer.style;
if(ns4) document.captureEvents(Event.MOUSEMOVE);
else
{
toolTipSTYLE.visibility = "visible";
toolTipSTYLE.display = "none";
}
document.onmousemove = moveToMouseLoc;
}
}
function toolTip(msg, fg, bg)
{
try {
if(toolTip.arguments.length < 1) // hide
{
if(ns4)
{
toolTipSTYLE.visibility = "hidden";
}
else
{
if (!endaction) {toolTipSTYLE.display = "none";}
if (rT) document.all("msg1").filters[1].Apply();
if (bT) document.all("msg1").filters[2].Apply();
document.all("msg1").filters[0].opacity=0;
if (rT) document.all("msg1").filters[1].Play();
if (bT) document.all("msg1").filters[2].Play();
if (rT){
if (document.all("msg1").filters[1].status==1 || document.all("msg1").filters[1].status==0){
toolTipSTYLE.display = "none";}
}
if (bT){
if (document.all("msg1").filters[2].status==1 || document.all("msg1").filters[2].status==0){
toolTipSTYLE.display = "none";}
}
if (!rT && !bT) toolTipSTYLE.display = "none";
}
}
else
{
if(!fg) fg = "#777777";
if(!bg) bg = "#eeeeee";
var content =
'<table id="msg1" name="msg1" border="0" cellspacing="0" cellpadding="1" bgcolor="' + fg + '" class="trans_msg"><td>' +
'<table border="1" cellspacing="2" cellpadding="3" bgcolor="' + bg +
'"><td><font face="Arial" color="' + fg +
'" size="-2">' + msg +
'</font></td></table></td></table>';
if(ns4)
{
toolTipSTYLE.document.write(content);
toolTipSTYLE.document.close();
toolTipSTYLE.visibility = "visible";
}
if(ns6)
{
document.getElementById("toolTipLayer").innerHTML = content;
toolTipSTYLE.display='block'
}
if(ie4)
{
document.all("toolTipLayer").innerHTML=content;
toolTipSTYLE.display='block'
//--图象过渡，淡入处理--
var cssopaction=document.all("msg1").filters[0].opacity
document.all("msg1").filters[0].opacity=0;
if (rT) document.all("msg1").filters[1].Apply();
if (bT) document.all("msg1").filters[2].Apply();
document.all("msg1").filters[0].opacity=cssopaction;
if (rT) document.all("msg1").filters[1].Play();
if (bT) document.all("msg1").filters[2].Play();
}
}
} catch(e) {}
}
function moveToMouseLoc(e)
{
var scrollTop = getScrollTop();
var scrollLeft = getScrollLeft();
if(ns4||ns6)
{
x = e.pageX + scrollLeft;
y = e.pageY - scrollTop;
}
else
{
x = event.clientX + scrollLeft;
y = event.clientY;
}
if (x-scrollLeft > getViewportWidth() / 2) {
x = x - document.getElementById("toolTipLayer").offsetWidth - 2 * offsetX;
}
if ((y+document.getElementById("toolTipLayer").offsetHeight+offsetY)>getViewportHeight()) {
y = getViewportHeight()-document.getElementById("toolTipLayer").offsetHeight-offsetY;
}
toolTipSTYLE.left = (x + offsetX)+'px';
toolTipSTYLE.top = (y + offsetY + scrollTop)+'px';
return true;
}
initToolTips();
</script>
</body>
</html>
<br />
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的网页代码下载网站 - 致力为中国站长提供有质量的网页代码！</p>
代码来自：http://www.webdm.cn/webcode/a05c07d1-0d68-482e-888e-3cec5891e054.html
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>JavaScript实现鼠标放上动画加载大图的代码_网页代码站(www.webdm.cn)</title>
<style>
*{ padding:0; margin:0;}
html { overflow:-moz-scrollbars-vertical; }
body{ word-break:break-all; text-align:left; background:#C0C0C0; color:#4E4E4E;}
ul,li{ list-style:none;}
a{ color:#333; text-decoration:none;}
a:hover{ color:#ff722d; text-decoration:none;}
img{ border:0;}
a img,a:hover img{ border:0;}
.latestWeb{ 560px; margin:10px auto 0;}
.latestWeb ul{ overflow:hidden; _height:1%;}
.latestWeb li{ float:left; border:1px solid #EBEAEA; 150px; padding:17px 0 14px 22px; margin:14px 18px 0 0; }
.trans_msg
{
filter:alpha(opacity=100,enabled=1) revealTrans(duration=.2,transition=1) blendtrans(duration=.2);
}
div.bodycontent{font-family:Arial, Helvetica, sans-serif;padding:0 10px 10px 13px;color:#555;line-height:22px;text-align:justify;text-justify:inter-ideograph;}
div.bodycontent ul{margin-left:0px}
</style>
<script language="javascript">
function toolTip(str) {
}
</script>
</head>
<body>
<div class="latestWeb">
<ul>
<li>
<div><a href="http://www.webdm.cn"><img src='http://www.webdm.cn/images/wall1_s.jpg' onMouseOver="toolTip('<img src=http://www.webdm.cn/images/wall1.jpg>')"
onMouseOut="toolTip()"></a></div>
</li>
<li>
<div><a href="http://www.webdm.cn"><img src='http://www.webdm.cn/images/wall2_s.jpg' onMouseOver="toolTip('<img src=http://www.webdm.cn/images/wall2.jpg>')"
onMouseOut="toolTip()"></a></div>
</li>
</ul>
</div>
<script language="javascript">
function getViewportHeight() {
if (window.innerHeight!=window.undefined) return window.innerHeight;
if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
if (document.body) return document.body.clientHeight;
return window.undefined;
}
function getViewportWidth() {
if (window.innerWidth!=window.undefined) return window.innerWidth;
if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth;
if (document.body) return document.body.clientWidth;
return window.undefined;
}
function getScrollTop() {
if (self.pageYOffset)
{
return self.pageYOffset;
}
else if (document.documentElement && document.documentElement.scrollTop)
{
return document.documentElement.scrollTop;
}
else if (document.body)
{
return document.body.scrollTop;
}
}
function getScrollLeft() {
if (self.pageXOffset)
{
return self.pageXOffset;
}
else if (document.documentElement && document.documentElement.scrollLeft)
{
return document.documentElement.scrollLeft;
}
else if (document.body)
{
return document.body.scrollLeft;
}
}
var rT=true;//允许图像过渡
var bT=true;//允许图像淡入淡出
var tw=150;//提示框宽度
var endaction=false;//结束动画
var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
offsetX = 10;
offsetY = 20;
var toolTipSTYLE="";
function initToolTips()
{
tempDiv = document.createElement("div");
tempDiv.id = "toolTipLayer";
tempDiv.style.position = "absolute";
tempDiv.style.display = "none";
document.body.appendChild(tempDiv);
if(ns4||ns6||ie4)
{
if(ns4) toolTipSTYLE = document.toolTipLayer;
else if(ns6) toolTipSTYLE = document.getElementById("toolTipLayer").style;
else if(ie4) toolTipSTYLE = document.all.toolTipLayer.style;
if(ns4) document.captureEvents(Event.MOUSEMOVE);
else
{
toolTipSTYLE.visibility = "visible";
toolTipSTYLE.display = "none";
}
document.onmousemove = moveToMouseLoc;
}
}
function toolTip(msg, fg, bg)
{
try {
if(toolTip.arguments.length < 1) // hide
{
if(ns4)
{
toolTipSTYLE.visibility = "hidden";
}
else
{
if (!endaction) {toolTipSTYLE.display = "none";}
if (rT) document.all("msg1").filters[1].Apply();
if (bT) document.all("msg1").filters[2].Apply();
document.all("msg1").filters[0].opacity=0;
if (rT) document.all("msg1").filters[1].Play();
if (bT) document.all("msg1").filters[2].Play();
if (rT){
if (document.all("msg1").filters[1].status==1 || document.all("msg1").filters[1].status==0){
toolTipSTYLE.display = "none";}
}
if (bT){
if (document.all("msg1").filters[2].status==1 || document.all("msg1").filters[2].status==0){
toolTipSTYLE.display = "none";}
}
if (!rT && !bT) toolTipSTYLE.display = "none";
}
}
else
{
if(!fg) fg = "#777777";
if(!bg) bg = "#eeeeee";
var content =
'<table id="msg1" name="msg1" border="0" cellspacing="0" cellpadding="1" bgcolor="' + fg + '" class="trans_msg"><td>' +
'<table border="1" cellspacing="2" cellpadding="3" bgcolor="' + bg +
'"><td><font face="Arial" color="' + fg +
'" size="-2">' + msg +
'</font></td></table></td></table>';
if(ns4)
{
toolTipSTYLE.document.write(content);
toolTipSTYLE.document.close();
toolTipSTYLE.visibility = "visible";
}
if(ns6)
{
document.getElementById("toolTipLayer").innerHTML = content;
toolTipSTYLE.display='block'
}
if(ie4)
{
document.all("toolTipLayer").innerHTML=content;
toolTipSTYLE.display='block'
//--图象过渡，淡入处理--
var cssopaction=document.all("msg1").filters[0].opacity
document.all("msg1").filters[0].opacity=0;
if (rT) document.all("msg1").filters[1].Apply();
if (bT) document.all("msg1").filters[2].Apply();
document.all("msg1").filters[0].opacity=cssopaction;
if (rT) document.all("msg1").filters[1].Play();
if (bT) document.all("msg1").filters[2].Play();
}
}
} catch(e) {}
}
function moveToMouseLoc(e)
{
var scrollTop = getScrollTop();
var scrollLeft = getScrollLeft();
if(ns4||ns6)
{
x = e.pageX + scrollLeft;
y = e.pageY - scrollTop;
}
else
{
x = event.clientX + scrollLeft;
y = event.clientY;
}
if (x-scrollLeft > getViewportWidth() / 2) {
x = x - document.getElementById("toolTipLayer").offsetWidth - 2 * offsetX;
}
if ((y+document.getElementById("toolTipLayer").offsetHeight+offsetY)>getViewportHeight()) {
y = getViewportHeight()-document.getElementById("toolTipLayer").offsetHeight-offsetY;
}
toolTipSTYLE.left = (x + offsetX)+'px';
toolTipSTYLE.top = (y + offsetY + scrollTop)+'px';
return true;
}
initToolTips();
</script>
</body>
</html>
<br />
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的网页代码下载网站 - 致力为中国站长提供有质量的网页代码！</p>
代码来自：http://www.webdm.cn/webcode/a05c07d1-0d68-482e-888e-3cec5891e054.html