จะทำให้ตัวเลขรันไปด้วย ทำยังไงครับผม ผมทำปุ่มเพิ่มช่อง textbox ด้วย jquery

<script language="javascript" src="jquery-1.8.2.js"></script>
<script type="text/javascript">
$(function(){
	$("#addRow").click(function(){
		$("#myTbl").append($("#firstTr").clone());
	});
	$("#removeRow").click(function(){
		if($("#myTbl tr").size()>1){
			$("#myTbl tr:last").remove();
		}else{
			alert("µéͧÁÕÃÒ¡ÒâéÍÁÙÅÍÂèÒ§¹éÍ 1 ÃÒ¡ÒÃ");
		}
	});			
});
</script>

<table id="myTbl" width="650" border="1" cellspacing="2" cellpadding="0">
  <tr id="firstTr">
    <td width="119"><input type="text" name="data1[]" id="data1[]" /></td>
    <td width="519"><input type="text" name="data2[]" id="data2[]" /></td>
    </tr>
</table>
<br />
<table width="500" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td>
    <button id="addRow" type="button">+</button>  
    &nbsp;
    <button id="removeRow" type="button">-</button>
	&nbsp;
    &nbsp;
    &nbsp;
    <button id="Submit" type="submit">Submit</button>    
    </td>
  </tr>
</table>