JavaScript闪烁文字代码

<style type="text/css">
#remaincolor{border-top:2px solid black;border-bottom:2px solid black;text-align:center;padding:3px 5px;}
.changecolor0{color:#f00;background:black;}
.changecolor1{color:#0f0;background:green;}
.changecolor2{color:#00f;background:yellow;}
.changecolor3{color:#f0f;background:purple;}
.changecolor4{color:brown;background:#f5f5f5;}
.changecolor5{color:red;background:lime;}
</style>
<div id="remaincolor">☆欢迎光临我的磨(wodemo)</div>
<script type="text/javascript">
var i=0;
function blink(){
document.getElementById("remaincolor").className="changecolor"+i%6;
i++;
}
setInterval(blink, 500);
</script>