Javascript技术实现真正的网上试听
该脚本的特点:应用Javascript的层技术，和一些function（）使播放音乐的同时实现歌词的相应滚动。
使用realplay的rm格式音乐使下载的同时进行播放。
（该特殊效果对IE4以上都有效。）
演示：
<html>
<head>
<SCRIPT Language="Javascript1.2">
<!--
var locate = 0;
var scro = 0;
var go=80;//控制滚动的速度，越小越快。
//以下函数实现滚动
function scroller() {
if ( scro==1 ){
locate++;
scroll(20,locate);
clearTimeout(timer);
var timer = setTimeout("scroller()",go);
timer;
}
else{
scroll(20,locate);
}
}
//-->
</SCRIPT>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Welcome to YI's Home</title>
</head>
<body bgcolor="#EEEEEE" >
<SCRIPT Language="Javascript1.2">
<!--
var offsettop=20//定义层的相应位置
//定义随网页自动滚动的层函数
function makeStatic() {
object1.style.pixelTop=document.body.scrollTop+offsettop;object2.style.pixelTop=document.body.scrollTop+offsettop;
setTimeout("makeStatic()",100);//'100'控制滚动的速度，越小越快。
}
//切换‘滚动‘和‘暂停'图像的函数
function scrorstp() {
if (scro==1)
{scro=0;
object2.style.visibility="visible";
object1.style.visibility="visible";
}
else {
scro=1;
object1.style.visibility="hidden";
scroller();}
}
//定义播放的歌曲地址
document.write('<div id="object2" style="position:absolute; left:20px; top:35px; width:46px; height:16px;cursor:hand; z-index:1 "><img src="zanting.gif" width="45" height="16" onclick=scrorstp()><font size="2"><embed height="20" src="Afainst All Odds Mariah Carey.rm" type="audio/x-pn-realaudio-plugin" width="45" controls="PlayButton" autostart="false"></font></div>')
//定义‘滚动‘和‘暂停'的切换图像，onclick激发切换。
document.write('<div id="object1" style="position:absolute; left:20px; top:35px; width:46px; height:16px; cursor:hand; z-index:1 "><img src="gundong.gif" width="45" height="16" onclick=scrorstp()></div>')
//启动Javascript
function menu3(){
if (document.all||document.layers)
makeStatic()
}
window.onload=menu3
//</SCRIPT>以下是歌词部分
//-->
</SCRIPT>
<ul>
<li>
<div align="center">
<center>
<p><span class="font" ><b>Mariah Carey--Against All Odds<font face="Times New Roman" size="4">
</b></span></p>
</div>
</center>
<blockquote>
<p style="line-height: 150%" align="justify" class="font"><span class="font">
How can I just let you walk away
Just let you leave without a trace
When I stand here taking
Every breath with you
You're the only one
Who really knew me at all
How can you just walk away from me
When all I can do is watch you leave
'Cause we've shared the laughter and the pain
And even shared the tears
You're the only one
Who really knew me at all
So take a look at me now
Oh there's just an empty space
And there's nothing left here to remind me
Just the memory of your face
Take a look at me now
'Cause there's just an empty space
And you coming back to me is against all odds
And that's what I've got to face
I wish I could just make you turn around
Turn around and see me cry
There's so much I need to say to you
So many reasons why
You're the only one
Who really knew me at all
So take a look at me now
'Cause there's just an empty space
And there's nothing left here to remind me
Just the memory of your face
Take a look at me now
'Cause there's just an empty space
But to wait for you is
All I can do
And that's what I've got to face
Take a good look at me now
'Cause l'll still be standing here
And you coming back to me is against all odds
That's the chance I've qot to take
Take a look at me now </p>
</span></p>
</blockquote>
<p></p>
</li>
</ul>
</body>
</html>
