点击链接显示文字

<SPAN id=tbur1>
<A href="javascript:showTrackBack1()"><b>添加回复</b></A> </span>
<SCRIPT type=text/javascript>
// 引用地址显示
function showTrackBack1(){
var tb_url_text
tb_url_text = '你好 '
document.getElementById("tbur1").innerHTML = tb_url_text
alert('1');