After I finished writing my browser plugin using FireBreath and OpenGL, and embedded the plugin using an object tag, I tried to overlay various HTML elements on top of the p
Try this solution which worked perfect for me.
Place a dummy IFrame below the plugin and place your required html in a div just below it.
My html goes here. It will be placed over the plugin!
and the CSS
.myClass
{
position:absolute;
width:250px; // your required height and width for the overlay html
height:250px;
other css as per your style
}