inez

var data = ["a","b",["b1","b2","b3",["c1","c2"]],"c",["c1","c2"]];
var traverse = function(data, callback) {
	var current = [data, 0];
	var stack = [current];
	while(stack.length > 0) {
		if(current[1] >= current[0].length) {
			stack.pop();
			current = stack[stack.length-1];
			continue;
		}