0 - 1 of 1 tags for ie6 browser

The following code works fine on most browsers but IE has a problem with it. Can you figure it out?

<head>
<title>Puzzler1</title>
</head>
<body onload="addClickHandler()">
<button id="myButton">Click Me</button>

<script>
function clickHandler(){
   ...
}

function addClickHandler(){
   myButton = document.getElementById("myButton");
   myButton.onclick = clickHandler;
}
</script>
</body>