longest_box_index is always 0

[jordiwang]

function get_longest_box_index() {
    // find the box with the longest axis of them all...
    var longest_box_index = 0;
    var box_index;
    for (box_index = boxes.length - 1; box_index >= 0; box_index -= 1) {
        if (boxes[box_index] > longest_box_index) {
            longest_box_index = boxes[box_index];
        }
    }
    return longest_box_index;
}

this get_longest_box_index always return 0, because boxes[box_index] > longest_box_index is always false, is it an issue or reasonable