var sender = (function () {
    return function (callback, ms, stop) {
        clearInterval(time);
        var time = setInterval(callback, ms);
        if (stop) {
            clearInterval(time);
        }

    }

})();

function start () {
 sender (function () {
  alert ('start');
 }, 5000);

   function stop () {
 sender (function () {
  alert ('stop');
 }, 5000, 1);

var sender = function () {
        console.log('YES');
};
var startSender;
function start () {
   startSender = setInterval (startSender, 5000);
 }

function stop () {
   cleanInterval (startSender);
 }