案例：HTML DOM案例     状态：可编辑再运行    进入竖版
 运行结果　
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<html>
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<head>
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<script type="text/javascript">
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function blinking_header()
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{
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if (!document.getElementById('blink').style.color)
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    {
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    document.getElementById('blink').style.color="red"
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    }
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if (document.getElementById('blink').style.color=="red")
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    {
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    document.getElementById('blink').style.color="black"
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    }
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else
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    {
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    document.getElementById('blink').style.color="red"
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    }
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timer=setTimeout("blinking_header()",100)
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}
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​
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function stoptimer()
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{
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clearTimeout(timer)
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}
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</script>
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</head>
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​
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<body onload="blinking_header()" onunload="stoptimer()">
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<h1 id="blink">闪动的标题</h1>
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</body>
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​
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</html>
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​