/*
* jQuery.fn.rand();
*
* Return a random, but defined numbers of elements from a jQuery Object.
* $('element').rand(); // returns one element from the jQuery Object.
* $('element').rand(4); // returns four elements from the jQuery Object.
*
* Version 0.8.5
* www.labs.skengdon.com/rand
* www.labs.skengdon.com/rand/js/rand.min.js
*/
;(function($){
	$.fn.rand = function( number ) {
		var array_rand = function (input, num_req) {
			// http://kevin.vanzonneveld.net
			// +   original by: Waldo Malqui Silva
			// *	 example 1: array_rand( ['Kevin'], 1 );
			// *	 returns 1: 0
			// FROM: http://phpjs.org/functions/array_rand:332
			var indexes = [];
			var ticks = num_req || 1;
			var checkDuplicate = function (input, value) {
				var exist = false,
				index = 0;
				while (index < input.length) {
					if (input[index] === value) {
						exist = true;
						break;
					};
					index++;
				};
				return exist;
			};
			while (true) {
				var rand = Math.floor((Math.random() * input.length));
				if (indexes.length === ticks) {
					break;
				};
				if (!checkDuplicate(indexes, rand)) {
					indexes.push(rand);
				}
	   		};
			return ((ticks == 1) ? indexes.join() : indexes);
		};

		if ( typeof number !== 'number' ) var number = 1;
		
		if ( number > this.length ) number = this.length;
		
		var numbers = array_rand( this, number );
		
		var $return = [];
		for ( var i = 0; i < number; i++ ) {
		    if(typeof(numbers)=='object'&&(numbers instanceof Array)){
			$return[i] = this.get( numbers[i] );
		    }else{
			$return[i] = this.get( numbers );
		    }

		};
		
		return $( $return );
		
	};
}(jQuery));