function start_de()
    {
    var breite = 795;
    var hoehe = 637;
    var posX=(screen.availWidth-breite)/2;
    var posY=(screen.availHeight-hoehe)/2;

    window.open('start.html',"xtech","toolbar=no,width=795,height=637,directories=no,status=yes,scrollbars=no,resize=no,resizable=no,menubar=no,screenX=" + posX + ",screenY=" + posY + ",left=" + posX + ",top=" + posY + "");
		
    } 
	 
function start_win()
    {
    var breite = 785;
    var hoehe = 629;
    var posX=(screen.availWidth-breite)/2;
    var posY=(screen.availHeight-hoehe)/2;

    window.open('start.html',"xtech","toolbar=no,width=785,height=629,directories=no,status=yes,scrollbars=no,resize=no,resizable=no,menubar=no,screenX=" + posX + ",screenY=" + posY + ",left=" + posX + ",top=" + posY + "");
    }