var hoehe=(screen.height); 
var breite=(screen.width);
self.resizeTo(breite, hoehe-10);
moveTo(0,0);



var win = null; 
function mainWindow(mypage){
//mypage = 'index_ger.htm';
myname = '';
w = '800';
h = '600';
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=no'+',resizable=no'

win = window.open(mypage,myname,settings) 
if(win.window.focus){win.window.focus();} 
}