function centred_window_scroll(theURL,w,h) {
meta_h = 40;
wtop = Math.round((screen.height - h - meta_h) / 2) - meta_h;
wleft = Math.round((screen.width - w) / 2);
info = window.open(theURL, '', 'width=' + (w + 20) + ', height=' + (h + meta_h + 10) + ',resizable=no,scrollbars=1,status=0,top=' + wtop + ',left=' + wleft);
}
function centred_window_noscroll(theURL,w,h) {
meta_h = 40;
wtop = Math.round((screen.height - h - meta_h) / 2) - meta_h;
wleft = Math.round((screen.width - w) / 2);
info = window.open(theURL, '', 'width=' + (w + 20) + ', height=' + (h + meta_h + 10) + ',resizable=no,scrollbars=0,status=0,top=' + wtop + ',left=' + wleft);
}
function large_picture(nam, file, w, h) {
meta_h = 50;
wtop = Math.round((screen.height - h - meta_h) / 2) - meta_h;
wleft = Math.round((screen.width - w) / 2);
pic = window.open('', '', 'width=' + (w + 20) + ', height=' + (h + meta_h + 10) + ',resizable=yes,top=' + wtop + ',left=' + wleft);
pic.document.open();
pic.document.writeln('\
\
\
\
\
' + nam + '\
\
\
\
\
\
\
\
\
\
\
');
pic.document.close();
}