JavaScript实现导航样式动态变化

<li><a href="#about" mce_href="#about" id="aboutNav" onclick="changeNavStyle(this.id)">关于<{$sitename}></a></li>
<li><a href="#advertise" mce_href="#advertise" id="advertiseNav" onclick="changeNavStyle(this.id)">广告服务</a></li>
<li><a href="#connectus" mce_href="#connectus" id="connectusNav" onclick="changeNavStyle(this.id)">联系我们</a></li>
<li><a href="#help" mce_href="#help" id="helpNav" onclick="changeNavStyle(this.id)">帮助中心</a></li>
<li><a href="#declare" mce_href="#declare" id="declareNav" onclick="changeNavStyle(this.id)">免责声明</a></li>

<mce:script type="text/javascript"><!--
var url = window.location;
url = url.toString();
var id = url.substr(url.indexOf("#")+1)+"Nav";
changeNavStyle(id);
function $(id) {
return document.getElementById(id);
}
function changeNavStyle(id) {
var nav = new Array("aboutNav","advertiseNav","connectusNav","helpNav","declareNav");
for(var i=0;i<nav.length;i++) {
if(nav[i]==id) {
$(id).style.color = "#049";
}else {
$(nav[i]).style.color = "";
}
}
}
// --></mce:script>