Front page unique string generation (Js)

 function uuid() {        var s = [];        var hexDigits = "0123456789abcdef";        for (var i = 0; i < 36; i++) {            s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);        }        s[14] = "4";  // bits 12-15 of the time_hi_and_version field to 0010        s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01        s[8] = s[13] = s[18] = s[23] = "-";              var uuid = s.join("");        return uuid;    }

Front page unique string generation (Js)