[kobezzza]

function rec(element) {
	var stack = [],
		children = element.children;
		
	for (var i = 0; i <= children.length; i++) {
		var child = children[i];
		
		if (child) {
			// Тут делаем наше действие
			console.log(child);
		
			if (child.children) {
				stack.push({
					i: i,
					children: children
				});
				
				children = child.children;
				i = -1;
				continue;
			}
		}
		
		if (stack.length) {
			var last = stack[stack.length - 1];
		
			children = last.children;
			i = last.i;
			
			stack.pop();
		}
	}
}