a标签点击后更改颜色

function choose(id){
    		document.getElementById("typeid").value = id;

    		//var infoa=document.getElementById("info_"+id);
    		//infoa.style.color = '#ff0000';

    		var a=document.getElementsByTagName("a");
			for(var i=0;i<a.length;i++){
     			if(a[i].id==id){
     				a[i].style.color='#FF0000';
     			}else{
     			   a[i].style.color = '#0357cc';
     			}
			}
    	}

　一组a标签只改变点击的颜色　

var a=document.getElementsByTagName("a");
			for(var i=0;i<a.length;i++){
     			if(a[i].id==id){
     				a[i].style.color='#FF0000';
     			}else{
     			   a[i].style.color = '#0357cc';
     			}
			}

　　

//var infoa=document.getElementById("info_"+id);
//infoa.style.color = '#ff0000';