用CSS+JavaScript实现文字闪烁效果

1. CSS
<style>
.dstyle1 {
font-size:13px;
font-weight: bold;
color: #ff6600;
}
.dstyle2 {
font-size:13px;
font-weight: bold;
color: #ffffff;
}
</style>
2. JavaScript
<script type="text/javascript">
m();
function m()
{
document.getElementById("span_new").className="dstyle1";
setTimeout("e()",400);
}
function e()
{
document.getElementById("span_new").className="dstyle2";
setTimeout("m()",300);
}
<script>