Here's a workaround, use Flash to c

[wangbar]

Here's a workaround, use Flash to call a custom javaScript function:

Javascript:

<script>
function doConfirm(message){
	if(confirm(message)){
		alert('OK!');
		}
		else {
		alert('Cancelled!')
	}
}
</script>

Flash:

btn.onRelease = function() {
	getURL("javascript:doConfirm('Confirm this?')");
};

The javascript is currently only throwing up alerts in response to the user's choice but you could add some Javascript/Flash Methods in there directing the movie to a particular frame depending on the choice made etc...