function winopen(URL, fenstername, w, h, scroll) {
var winlinks = (screen.width - w) / 2;
var winoben = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+winoben+',left='+winlinks+',scrollbars='+scroll+',resizable';
win = window.open(URL, fenstername, winprops);
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

function winopen2(URL, fenstername, w, h, scroll) {
var winlinks = (screen.width - w) / 2;
var winoben = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+winoben+',left='+winlinks+',scrollbars='+scroll+',status,resizable';
win = window.open(URL, fenstername, winprops);
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}