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';