#bg {
	/* Set the width dynamically depending on the width of the browser window */
    width:100%;
	/* dont enlarge the image more, than its initial resolution */
    max-width:1920px;
	max-height:1280px;
	/* Set the height dynamically depending on the image's current width, keeping the aspect ratio */
    height:auto;
	position: absolute;
	top: 0px;
	left: 0px;
}
#FlashID {
	position: absolute;
	top: 50%;
	left: 50%;
}