function fenster(datei,w,h,fname) {
	sw = screen.width;
	sh = screen.height;      
	//cx = (.5*sw) - (w*.5);
	cx = 20;
    cy = 20;
	var  fprop = 'status=no,'+'width='+w+','+'height='+h+',' + 'screenX=' +cx+','+'screenY='+cy+','+'left='+cx+','+'top='+cy+','+'scrollbars=no'
	Pop=window.open(datei,fname,fprop);
 	Pop.focus();
}
function pop(datei,w,h,fname) {
	sw = screen.width;
	sh = screen.height;      
	//cx = (.5*sw) - (w*.5);
	cx = 20;
    cy = 20;
	var  fprop = 'status=no,'+'width='+w+','+'height='+h+',' + 'screenX=' +cx+','+'screenY='+cy+','+'left='+cx+','+'top='+cy+','+'scrollbars=yes,resizable=no'
	Pop=window.open(datei,fname,fprop);
 	Pop.focus();
}