跑马灯滚动特效

<div id="myDiv0" style="position:absolute; z-index:1; top:2px;">
    <marquee direction="right" scrollamount="10">
        <font color="#FF99FF">01234567890123456789</font>
    </marquee>
</div>
<div id="myDiv1" style="position:absolute; z-index:1; top:200px;">
    <marquee direction="left" scrollamount="">
        01234567890123456789
    </marquee>
</div>
<div id="myDiv2" style="position:absolute; z-index:1; top:300px;">
    <marquee direction="right" scrollamount="">
        01234567890123456789
    </marquee>
</div>
<div id="myDiv3" style="position:absolute; z-index:1; top:400px;">
    <marquee direction="left" scrollamount="">
        01234567890123456789
    </marquee>
</div>