var browser=''; 
        var version='';
        if (navigator.appName.indexOf('Microsoft') != -1)
            browser = 'IE'
        else if (navigator.appName.indexOf('Netscape') != -1)
            browser = 'Netscape'
        if (version == ''){
            version= navigator.appVersion;
            paren = version.indexOf('(');
            whole_version = navigator.appVersion.substring(0,paren-1);
            version = parseInt(whole_version);
        }
        today = new Date();
        year=today.getYear();
        if (browser=="IE" && version>= "4.00"){
            year = year;
        }
        else {
            year= year+1900;
        }