<html>
<head>
<script type="text/javascript">
function blinking_header()
{
if (!document.getElementById('blink').style.color)
{
document.getElementById('blink').style.color="red"
}
if (document.getElementById('blink').style.color=="red")
{
document.getElementById('blink').style.color="black"
}
else
{
document.getElementById('blink').style.color="red"
}
timer=setTimeout("blinking_header()",100)
}
function stoptimer()
{
clearTimeout(timer)
}
</script>
</head>
<body onload="blinking_header()" onunload="stoptimer()">
<h1 id="blink">闪动的标题</h1>
</body>
</html>