javascript改变文字透明度，文字闪烁效果：
<html>
<head>
<style type="text/css">
.title
{
font-size:50px;
font-family:Arial black;
filter:alpha(opacity=10);
}
</style>
<script type="text/javascript">
function $(id)
{
return document.getElementById(id);
};
function changeOpacity()
{
var direction=-1;
var opacityValue=100;
function doChange()
{
if(++opacityValue>=100)
{
direction=-1;
}
if(--opacityValue<=0)
{
direction=1;
}
opacityValue+=direction;
$("t1").style.filter="alpha(opacity="+opacityValue+")";
$("t1").style.opacity=opacityValue/100;
};
setInterval(doChange,10);
};
</script>
</head>
<body onload="changeOpacity()">
<table id="t1" class="title"><tr><td>Hi,I'm content for text</tr></table>
</body>
</html>