function display_next(filename){

        /* initialize variables*/
        var file = filename

        /* determine browser */
        var bName = navigator.appName;
        var bVer = parseFloat(navigator.appVersion);
        
        if (bName == "Netscape") 
                NewWindow = window.open(file, "","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,copyhistory=0,width=900,height=650");
        else  
                NewWindow = window.open(file, "","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,copyhistory=0,width=900,height=650");
}