Js实现当前点击a标签变色突出显示其他a标签回复原色

<a href="1.aspx?id=1" id="1" target="_parent">""</a>
<a href="1.aspx?id=2" id="2" target="_parent">""</a>
<a href="1.aspx?id=3" id="3" target="_parent">""</a>

<script>
&(document).ready(function(){
var id = windows.ulr.substring(windows.ulr.IndeOf("?id="),1) //取得id值
var currtA = document.getElementById(id); //取得当前被点击a标签
if(currtA != null)
currtA.style.color = "#f00";
});
</script>

<a href="#" onclick="changeCss(this)">""</a>

<script>
function changeCss(obj){
var alist = document.getElementsByTagName("a");
for(var i =0;i < alist.Length;i++){
alist[i].style.color = "#000"; //给所有a标签赋原色
}
obj.style.color = "#f00"; //令当前标签高亮
}
//当然也可以用Jquery的$("a").removeCss() 和addCss()来实现
</script>