问成功时jQuery live未更新按钮值

EN

<div>
<a href=".." id=".."></a> //similarly multiple links
</div>

$('#tags a').click(function(e){
e.preventDefault();
var send = $(this).attr('href');
$.ajax({
    url:'getitemsfortag.php',
    data:{tag:send},
    type:'GET',
    dataType:'html',
    success:function(data){
        $('#items').empty().append(data); //data contains list of buttons
    },
    error:function(xhr, status){
        alert("Problem");
    }
});

});

$("input[type='button']").live('click',function(){
var selected = $(this).attr("id");
var val = prompt("Enter new value",0);
$this = $(this);
$.ajax({
    url:'updateCostItems.php',
    data:{toupdate:selected, updatewith:val},
    type:'GET',
    dataType:'json',
    success:function(json){
        $this.val(json.update);
    },
    error:function(xhr, status){
        alert("Problem");
    }
    });
});
});