using onmousemove with tag

Hello, Please see the attached. I'm using an onmousemove event handler on the page, however, when I scroll over the embedded object (an Authorware file), the onmousemove event stops capturing the mouse movements. Is there any way to be able to recognize mouse movements over the embedded object? I only need this to work in IE. Please note that when you open up the attached file, the embedded object is not actually loaded. So you will see the mouse movement being captured over the entire page. But once the object is loaded, it is then that mouse movements stops being captured over the object. I would really appreciate anyone's help on this. Thanks,