document.getElementById('rueckruf_kastro_de').href="javascript:fenster('rueckruf.php',320,580,'ab')";
function fenster(url,b,h,n){
	var win;
	win=window.open(url,n,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width='+b+',height='+h+',screenX=18,screenY=1,top=22,left=1');
	win.focus();
}