var Fenster1 = null;
var Fenster2 = null;
function neuesFenster(meineSeite,meinName,w,h){
if (navigator.platform == "Win32") {
	Fenster1 = window.open("","GDV3","top="+screen.height+",left="+screen.width+",width=1,height=1");
}
LeftPosition = (screen.width) ? (screen.width-400)/2 : 0;
TopPosition = (screen.height) ? (screen.height-60)/2 : 0;
settings = 'height=250, width=588, top='+TopPosition+',left='+LeftPosition+', scrollbars=yes';
Fenster2 = window.open(meineSeite,meinName,settings);
Fenster2.focus();
if (navigator.platform == "Win32") {
	Fenster1.close();
}
}