```
<HTML>
<HEAD>
    <TITLE> New Document </TITLE>
    <script src="jquery-1.8.1.min.js" type="text/javascript"/> 
    <script type="text/javascript">
        $(document).ready(function(){  
            $('btn').click(function(){
                alert('hey'); 
            }); 
        });  
    </script>
</HEAD>
<button id="btn">click</button>
    Button to fire a event
</HTML>

```

I can't get a click event on IE8!
What i had done wrong?