var hoehe = screen.availHeight;
var breite = screen.availWidth;

var hoehe_gesamt = screen.Height;
var breite_gesamt = screen.Width;

var verhaeltnis = breite_gesamt/hoehe_gesamt;
var tv = 4/3;
var tv1 = 1.25;
    

var a = hoehe/2-175;
var b = breite/2-175;
var c = breite/4-175;

function init() {

       if (verhaeltnis == tv || verhaeltnis == tv1) {
        window.open("../cgi-bin/webContento/load.php","Login","width=350,height=350,top=" + a + ",left=" + b + "");
	}
else {
	window.open("../cgi-bin/webContento/load.php","Login","width=350,height=350,top=" + a + ",left=" + c + "");
     }

 
                }