不拖网站打开速度的奥运奖牌榜带按钮开关的{非插件方式}

预览：http://kokia.name

把代码插进侧边栏合适位置就可以了 ~

<SCRIPT>
var intTimeStep=20;
var isIe=(window.ActiveXObject)?true:false;
var intAlphaStep=(isIe)?5:0.05;
var curSObj=null;
var curOpacity=null;
function startObjVisible(objId)
{
curSObj=document.getElementById(objId);
setObjState();
}
function setObjState(evTarget)
{
if (curSObj.style.display==""){curOpacity=1;setObjClose();}
else{
if(isIe)
{
curSObj.style.cssText='DISPLAY: none;Z-INDEX: 1; FILTER: alpha(opacity=0); POSITION: absolute;';
curSObj.filters.alpha.opacity=0;
}else
{
curSObj.style.opacity=0
}
curSObj.style.display='';
curOpacity=0;
setObjOpen();
}
}
function setObjOpen()
{
if(isIe)
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curSObj.filters.alpha.opacity+=intAlphaStep;
if (curSObj.filters.alpha.opacity<100) setTimeout('setObjOpen()',intTimeStep);
}else{
curOpacity+=intAlphaStep;
curSObj.style.opacity =curOpacity;
if (curOpacity<1) setTimeout('setObjOpen()',intTimeStep);
}
}
function setObjClose()
{
if(isIe)
{
curSObj.filters.alpha.opacity-=intAlphaStep;
if (curSObj.filters.alpha.opacity>0) {
setTimeout('setObjClose()',intTimeStep);}
else {curSObj.style.display="none";}
}else{
curOpacity-=intAlphaStep;
if (curOpacity>0) {
curSObj.style.opacity =curOpacity;
setTimeout('setObjClose()',intTimeStep);}
else {curSObj.style.display='none';}
}
}
</SCRIPT>
</head>
<body>
<table width="98%"><tr><td valign="top" align="center"><input type=button onclick="startObjVisible('olympic');if(this.value=='打开奥运金牌榜'){this.value='隐藏奥运金牌榜'}else{this.value='打开奥运金牌榜'}" value="打开奥运金牌榜"></td>
</tr>
<tr><td valign="top">
<DIV id="olympic" style="DISPLAY: none;" valign="top" align="center">
<iframe src="http://saicheng.2008.ifeng.com/data/medal_yellow.php" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no" width="201px" height="240px"></iframe>
</DIV></td></tr>
</table>