var Fenster = null;

function neuesFenster(meineSeite,meinName,w,h){

	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;

	settings ='height='+h+',width='+w+',top='+TopPosition+	
	',left='+LeftPosition+',scrollbars='+scroll+',resizable'
	Fenster = window.open(meineSeite,meinName,settings)
}