function formular(url,breite,hoehe) {
	if (!window.myWin) {
		myWin = open(url, "bilder","width="+breite+" , height="+hoehe+", left=20, top=20, screenX=20, screenY=20, scrollbars");
	
	}
	else {
		if (!window.myWin.closed){
			myWin.close();
			myWin= open(url, "bilder","width="+breite+" , height="+hoehe+", left=20, top=20, screenX=20, screenY=20, scrollbars");
		}
		else{
			myWin= open(url, "bilder","width="+breite+" , height="+hoehe+", left=20, top=20, screenX=20, screenY=20, scrollbars");
		}
	}
}