var all_answers = "141332323444113311142314123421444344122344343411244421131132";
var all_maxAnswers = "444444444444444444444444444444444444444444444444444444444444";
var all_instruction = "000000000000000000000000000000000000000000000000000000000000";
var all_explain = "000000000000000000000000000000000000000000000000000000000000";
var all_choice = "999999999999999999999999999999999999999999999999999999999999";
var currentQuestion = 0;
reference = new Array("7-8","12","8-9","10-11","9-10","9-10","8","9-10","18-19","12","16","16","16","12","12","16-17","8","9","12","9-10","9","14","8","16","11-12","16","7-8","16-17","8","16","30","38","39","26","32","30","38","24-25","31; 37-38","34; 37","31","39","35","42","25","28; 44","36","25","25","36","36","32","36; 37","37","30","24-25","27-28","38-39","30","39-42");