Java Applet, IFRAME tag and MouseMove

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Monday, June 23, 2008 3:47 PM

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In a page with a Java applet I also have an inline frame. The IFRAME's source is a page which uses JavaScript to display the mouse coordinates in a paragraph tag along with a floating DIV next to the mouse. This entire setup works as expected in Firefox 2 and 3 but has rather unusual results in Internet Explorer 7: the coordinates do not update as the mouse moves but only when the mouse leaves the IFRAME and the CPU utilization is abnormally high.

The main page:

Code Snippet

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" http://www.w3.org/TR/html4/loose.dtd>
<html>
<head>

<body>

<applet height=18 width=800 code="ap.class"></applet>

<iframe src="trackMouse.html"></iframe>

</body>

</html>

The source of the IFRAME:

Code Snippet

<html>
<body>

<p id="info"></p>

<script type="text/javascript">
function stuff(e) {
    if (!e) {
        e = event;
    }

    var clientX = (document.all) ? e.offsetX : e.layerX;
    var clientY = (document.all) ? e.offsetY : e.layerY;

    document.getElementById("info").innerHTML = "X = " + clientX + "<br>Y = " + clientY;

    var tooltip = document.getElementById("tooltip");

    tooltip.innerHTML = clientX + " Miles";
    tooltip.style.left = clientX + 10 + "px";
    tooltip.style.top = clientY + 10 + "px";
}

v = document.createElement("div");

v.id               = "tooltip";
v.style.top        = "100px";
v.style.left       = "100px";
v.style.border     = "0px solid black";
v.style.background = "Yellow";
v.innerHTML        = "";
v.style.position   = "absolute";

document.body.appendChild(v);

if (document.addEventListener) {
    document.addEventListener("mousemove", stuff, false);
} else if (document.attachEvent) {
    document.attachEvent("onmousemove", stuff);
}
</script>
</body>
</html>

I cannot seem to find any reason why this code would not work in IE. I would suspect it may be related to Java applets and IFRAME tags. Any help would be greatly appreciated.
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