var sc = 4;                    // Number of alternative strings
    var s = new Array(sc);          // Array to hold alternative strings
    // String definitions. There should be exactly 'sc' strings, numbered
    // from 0 to (sc - 1). You can embed markup in the strings, provided
    // you're careful to escape any double quotes. Note that if you fail
    // to define enough strings, you'll get 'undefined' appearing in place
    // of the string, or possibly even a security violation, which tends
    // to be unaesthetic.
    s[0] = "<font size=+2>";
    s[1] = "<font size=+2>";
    s[2] = "<font size=+3>";
    s[3] = "<font size=+3>";
    
   
    function pickRandom(range) {
        if (Math.random)
            return Math.round(Math.random() * (range-1));
        else {
            var now = new Date();
            return (now.getTime() / 1000) % range;
        }
    }
   
    var choice = pickRandom(sc);
    document.writeln(s[choice] );