Flash Z-Order Issue in Firefox only?

Hello,

I've developed a custom flash chart vaadin UI component that works great, but I'm having a z-order issue with notifications being covered by the flash component. I understand that using the "wmode=opaque" parameter for the flash object should resolve this. This worked in IE, but I still have the z-order issue in Firefox.

In IE, it looks like the following:

However, in Firefox it looks like the following:

How can I fix this issue?

Below I've included the portion of my code that embeds the Flash object:

private void setFlash() {

        String html =    
        	 "<script type=\"text/javascript\" src=\""+GWT.getModuleBaseURL()+"js/json/json2.js\"></script>"
        	+ "<object id=\"fxofc2"
                + uidlId
                + "\" classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" width=\"100%\""
                + " height=\"100%\" codebase=\"http://fpdownload.adobe.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0\">"
                + "<param name=\"movie\" value=\""
                + GWT.getModuleBaseURL()
                + "open-flash-chart.swf\">"
                + "<param name=\"quality\" value=\"high\">"
                + "<param name=\"wmode\" value=\"opaque\">"               
                + "<param name=\"flashVars\" value=\"pid="
                + uidlId
                + "&sbVis="
                + scrollbarVisibility
                + "&bgS=0x"
                + backgroundGradientStart
                + "&bgE=0x"
                + backgroundGradientEnd
                + "\" />"
                + "<embed name=\"fxofc2"
                + uidlId
                + "\" flashVars=\"pid="
                + uidlId
                + "&sbVis="
                + scrollbarVisibility
                + "&bgS=0x"
                + backgroundGradientStart
                + "&bgE=0x"
                + backgroundGradientEnd
                + "\" src=\""
                + GWT.getModuleBaseURL()
                + "open-flash-chart.swf\" width=\"100%\" height=\"100%\" "
                + "quality=\"high\" "
                + "pluginspage=\"http://www.adobe.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash\">"
                + "</embed>" + "</object>";
        flash.setHTML(html);
    }      

Any ideas? Thanks for your help.

Ajay

Where you ever able to fix this issue?