my code was working and taking my text from textbox to next page + my Input control to next page via js but suddenly there seems to be a blunder whats wrong in following code 

```
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.js"></script>
<script type="text/javascript">
var i=2;
function AddTextbox(){
container.innerHTML=container.innerHTML+'<input type="text" name="'+ i + '">';
i++;
}
</script>

</head>
<body>
<form action="next.php" method="post">
<input type="text" name="1" />
<input type="button" onClick="AddTextbox" name="btn" value="add" />
<input type="submit" name="submit" value="sub" />
<div id="container"></div>
</form>
</body>
</html> 

```