//////////////////////////////////////////////////////

function popup(url) 
{   
		var url=url;
        
        if(url.indexOf('?') != -1) {
	        url+="&popup=1";
		} else {
        	url+="?popup=1";
        }
        
        var breite = 750;
        var hoehe = 780;
        
        var winH = (screen.width - breite) / 2;
		var winV = (screen.height - hoehe) / 2;

        var fenster = open(url,"popup","dependent=yes,directories=no,location=no,menubar=no,personalbar=no,scrollbars=yes,status=no,resizable=yes,width=" + breite + ",height=" + hoehe +",top="+winV+",left="+winH);
        fenster.focus();
        
        return;
}

//////////////////////////////////////////////////////