var uCatsOut=[
['7','1','0'],
['8','1','2'],
['10','1','0'],
['11','1','0'],
['12','1','1'],
['13','1','0'],
['22','1','0']
];

function getRandomInt(min, max)
{
	var randNum;
	randNum = Math.floor(Math.random() * (max - min + 1)) + min;
	return randNum;
}

function randomIdsOfCat(catslength){
	var num;
	var randNumOld = [];
	for(i=0; i<catslength; i++){
		num = getRandomInt(0, uCatsOut.length-1);
		if(randNumOld.length > 0){
			for(k = 0; k < randNumOld.length; k++){
				if(num == randNumOld[k]){
					k=0;
					num = getRandomInt(0, uCatsOut.length-1);
				}
			}	
		}
		randNumOld[i] = num;
	}
	return randNumOld;
}

 var s = randomIdsOfCat(6);

alert (s);

function randomIdsOfCat(catslength){
  var arr = [];
  for(i = 0;i<catslength;i++) {
    while(arr.indexOf(r = getRandomInt(0, uCatsOut.length)) != -1);
    arr.push(r);
  }
  return arr;
}

var shiffle = function (array, max) {
    var i = array.length;

    while(i--)
        array[i] == array[i-1] && array.splice(i, 1);

    return array.sort(function() {
        return .5 - Math.random();
    }).splice(0, max);
};

alert(shiffle([1, 1, 1, 2, 2, 4, 3, 3, 3, 5, 5, 5, 7, 8, 9], 5));