winopts1 ="resizable=no,scrollbars=yes,toolbar=no,location=no,directories=no,status=yes,height=400,width=550"
winopts2 ="resizable=no,scrollbars=yes,toolbar=no,location=no,directories=no,status=yes,height=410,width=550"
pre ="resizable=no,scrollbars=yes,toolbar=no,location=no,directories=no,status=yes,height=500,width=600"


function about()
                {
                if (navigator.appVersion.indexOf("(X11") != -1 ||
navigator.appVersion.indexOf("(Mac") != -1)
                        {
                        window.open("about.html", "about", winopts1);
                        window.open("about.html", "about", winopts1);
                        }
                else
                        {
                        window.open("about.html", "about", winopts2);

                        }
                }
function pres()
                {
                if (navigator.appVersion.indexOf("(X11") != -1 ||
navigator.appVersion.indexOf("(Mac") != -1)
                        {
                        window.open("./cgi-bin/present/index.html", "pres", pre);
                        window.open("./cgi-bin/present/index.html", "pres", pre);
                        }
                else
                        {
                        window.open("./cgi-bin/present/index.html", "pres", pre);

                        }
                }