Tutorial Call Function with Random Timer

function randRange(data) {
var newTime = data[Math.floor(data.length * Math.random())];
return newTime;
}

function toggleSomething() {
var timeArray = new Array(200, 300, 150, 250, 2000, 3000, 1000, 1500);

// do stuff, happens to use jQuery here (nothing else does)
$("#box").toggleClass("visible");

clearInterval(timer);
timer =