As much as I love jQuery. I can't get this to work. However, I tried this in plain old javascript and it worked just fine in IE, FF,Safari and Chrome.
<script type="text/javascript">
window.onload = function() {
var frm = document.getElementById("myIframe").contentWindow;
frm.onscroll = function(){
alert("EUREKA");
}
}
</script>
EDIT: The following works in FF, Safari and Chrome when using window.load(). When using document.ready it only works in FF. For whatever reason it doesn't work in IE8 in either event.
$(window).load(function(){
$($('#myIframe').contents()).scroll(function(){
alert('frame scrolled in jquery');
});
});