function PopUp(url,wname,width,height) {
	var winl = (screen.width - width) / 2;
	var wint = (screen.height - height) / 2;
	newfenster1 = window.open(url, wname, "scrollbars,resizable=no,width=" +width+ ",height=" +height+ ",top="+wint+",left="+winl);
	if (document.images) 
		newfenster1.focus();
} 
      
function openWindow(theURL,winName,features) { 
        fenster=window.open(theURL,winName,features);
	    fenster.focus();
}

function openRezeptWindow(link) {
	fenster=window.open(link,'Rezept','width=565,height=560,toolbar=no,status=no,scrollbars=yes,resizable=no,menubar=no,location=no');
	fenster.focus();
	return false;
}

function Wechsel(bildname,bild) {
     document.images[bildname].src=bild;
}