function open_bild(BildSeite) {
	bildWindow = window.open(BildSeite,"bildWindow","width=500,height=522,left=100,top=60,scrollbars=no");
	bildWindow.focus();
}

function open_video(VideoSeite) {
	videoWindow = window.open(VideoSeite,"videoWindow","width=370,height=335,left=150,top=100,scrollbars=no");
	videoWindow.focus();
}