function rand (min, max) {
    // Returns a random number  
    // 
    // version: 1103.1210
    // discuss at: http://phpjs.org/functions/rand
    // +   original by: Leslie Hoare
    // +   bugfixed by: Onno Marsman
    // %          note 1: See the commented out code below for a version which will work with our experimental (though probably unnecessary) srand() function)
    // *     example 1: rand(1, 1);
    // *     returns 1: 1
    var argc = arguments.length;
    if (argc === 0) {
        min = 0;
        max = 2147483647;
    } else if (argc === 1) {
        throw new Error('Warning: rand() expects exactly 2 parameters, 1 given');
    }
    return Math.floor(Math.random() * (max - min + 1)) + min;
 
/*
    // See note above for an explanation of the following alternative code
    
    // +   reimplemented by: Brett Zamir (http://brett-zamir.me)
    // -    depends on: srand
    // %          note 1: This is a very possibly imperfect adaptation from the PHP source code
    var rand_seed, ctx, PHP_RAND_MAX=2147483647; // 0x7fffffff
 
    if (!this.php_js || this.php_js.rand_seed === undefined) {
        this.srand();
    }
    rand_seed = this.php_js.rand_seed;
 
    var argc = arguments.length;
    if (argc === 1) {
        throw new Error('Warning: rand() expects exactly 2 parameters, 1 given');
    }
 
    var do_rand = function (ctx) {
        return ((ctx * 1103515245 + 12345) % (PHP_RAND_MAX + 1));
    };
 
    var php_rand = function (ctxArg) { // php_rand_r
        this.php_js.rand_seed = do_rand(ctxArg);
        return parseInt(this.php_js.rand_seed, 10);
    };
 
    var number = php_rand(rand_seed);
 
    if (argc === 2) {
        number = min + parseInt(parseFloat(parseFloat(max) - min + 1.0) * (number/(PHP_RAND_MAX + 1.0)), 10);
    }
    return number;
    */
}