function $(sId)
{
    if (!sId) {
      return null;
    }
    return document.getElementById(sId);
}

function setCity(name){
  // $('c_citi').value = name;
$('c_citi').innerHTML = '<b>'+ name+'</b>';
$('sr_citi').value = name;
}

function setProv(name){
//   $('c_prov').value = name;
$('c_prov').innerHTML = '<b>'+ name +'</b>';
$('sr_prov').value = name;
}

var __now   = 1;
var __count = 1;
var prog    = 0;
var __vals  = [];
var div   = '';
var count = '';
var __tips  = [];
var timer   = 0;
var s_timer = 0;

var timerID = 0;
var tStart  = null;

function UpdateTimer() {
   if(timerID) {
      clearTimeout(timerID);
      clockID  = 0;
   }

   if(!tStart)
      tStart   = new Date();

   var   tDate = new Date();
   var   tDiff = tDate.getTime() - tStart.getTime();

   tDate.setTime(tDiff);

   div = $('timer');
   var s = tDate.print('%M:%S');
   div.innerHTML = s;
   timerID = setTimeout("UpdateTimer()", 1000);
}

function start_timer() {
   tStart   = new Date();
   div = $('timer');
   div.innerHTML = "00:00";

   timerID = setTimeout("UpdateTimer()", 1000);
   update_check();
}

function update_check(){
   xajax_check_time();
   setTimeout("update_check()", 60000);
}

function show_first(){
   div = $('test_1');
   div.style.display = 'block';
   show_page();

}

function show_next(){

   calck_progress();

   if(__now>__count) return;
   div = $('test_'+__now);
   div.style.display = 'none';
   __now++;
        div = $('fin');
        div.style.display = 'inline';
   if(__now>__count){
        div = $('fin');
        div.style.display = 'none';
     __now = __count+1;
     if(prog == 100){
        div = $('test_finish');
        div.style.display = 'block';
     }
     else{
        div = $('test_finish_err');
        div.style.display = 'block';
     }
   }else{
     div = $('test_'+__now);
     div.style.display = 'block';
   }

   count = $('count');
   count.innerHTML = (__now<=__count)?' '+__now+'/'+__count+' ':' '+__count+'/'+__count+' ';
   show_page();
}

function show_prev(){
   calck_progress();
        div = $('fin');
        div.style.display = 'inline';
   if(__now<=1) return;
   div = $('test_finish');
   if(div) div.style.display = 'none';
   div = $('test_finish_err');
   if(div) div.style.display = 'none';
   div = $('test_'+__now);
   if(div) div.style.display = 'none';
   __now--;
   div = $('test_'+__now);
   div.style.display = 'block';

   count = $('count');
   count.innerHTML = (__now<=__count)?' '+__now+'/'+__count+' ':' '+__count+'/'+__count+' ';
   show_page();
}

function check_val(obj){
  for(var i=0;i<__vals[obj];i++){
    if(__tips[obj]==0)
    if(document.IQ['otv['+obj+']['+i+']'].checked) return true;

    if(__tips[obj]==1)
    if(document.IQ['otv['+obj+']'][i].checked) return true;

  }
  return false;
}

function show_finish(){
  if(prog!=100)return;
  calck_progress();
   div = $('test_'+__now);
   div.style.display = 'none';
  __now = __count;
  show_next();
  show_page();
}

function show_num(num){
   calck_progress();
        div = $('fin');
        div.style.display = 'inline';
   div = $('test_finish');
   if(div) div.style.display = 'none';
   div = $('test_finish_err');
   if(div) div.style.display = 'none';
   div = $('test_'+__now);
   if(div) div.style.display = 'none';
   __now = num;
   div = $('test_'+__now);
   div.style.display = 'block';

   count = $('count');
   count.innerHTML = (__now<=__count)?' '+__now+'/'+__count+' ':' '+__count+'/'+__count+' ';
   show_page();
}

function calck_progress(){
  var pg = 0;

  for(var i=0;i<=__count;i++){
    if(check_val(i)){
      pg++;
      div = $('pg'+(i+1));
      if(div) div.className = 'knopar_ok';
    }
    else{
      div = $('pg'+(i+1));
      if(div) div.className = 'knopar2';
    }
  }
  prog = (pg!=0)?Math.round(pg/__count*100):0;
  var progress = $('pr_count');
//  progress.innerHTML = prog+'%';
  progress.style.width = prog+'%';
  var progress = $('pr_c');
  progress.innerHTML = prog+'%';

  if(prog==100){
    div = $('fin');
    if(div) div.className = 'knopar';
  }
}

function show_page(){
   div = $('pg'+__now);
   if(div) div.className = 'knopar_now';
}

function finish_test(){
  document.IQ.submit();
}

/** Adds the number of days array to the Date object. */
Date._MD = new Array(31,28,31,30,31,30,31,31,30,31,30,31);

/** Constants used for time computations */
Date.SECOND = 1000 /* milliseconds */;
Date.MINUTE = 60 * Date.SECOND;
Date.HOUR   = 60 * Date.MINUTE;
Date.DAY    = 24 * Date.HOUR;
Date.WEEK   =  7 * Date.DAY;

/** Returns the number of days in the current month */
Date.prototype.getMonthDays = function(month) {
  var year = this.getFullYear();
  if (typeof month == "undefined") {
    month = this.getMonth();
  }
  if (((0 == (year%4)) && ( (0 != (year%100)) || (0 == (year%400)))) && month == 1) {
    return 29;
  } else {
    return Date._MD[month];
  }
};

/** Returns the number of day in the year. */
Date.prototype.getDayOfYear = function() {
  var now = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
  var then = new Date(this.getFullYear(), 0, 0, 0, 0, 0);
  var time = now - then;
  return Math.floor(time / Date.DAY);
};

/** Returns the number of the week in year, as defined in ISO 8601. */
Date.prototype.getWeekNumber = function() {
  var d = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
  var DoW = d.getDay();
  d.setDate(d.getDate() - (DoW + 6) % 7 + 3); // Nearest Thu
  var ms = d.valueOf(); // GMT
  d.setMonth(0);
  d.setDate(4); // Thu in Week 1
  return Math.round((ms - d.valueOf()) / (7 * 864e5)) + 1;
};

/** Checks dates equality (ignores time) */
Date.prototype.equalsTo = function(date) {
  return ((this.getFullYear() == date.getFullYear()) &&
    (this.getMonth() == date.getMonth()) &&
    (this.getDate() == date.getDate()) &&
    (this.getHours() == date.getHours()) &&
    (this.getMinutes() == date.getMinutes()));
};

/** Prints the date in a string according to the given format. */
Date.prototype.print = function (str) {
  var m = this.getMonth();
  var d = this.getDate();
  var y = this.getFullYear();
  var wn = this.getWeekNumber();
  var w = this.getDay();
  var s = {};
  var hr = this.getHours();
  var pm = (hr >= 12);
  var ir = (pm) ? (hr - 12) : hr;
  var dy = this.getDayOfYear();
  if (ir == 0)
    ir = 12;
  var min = this.getMinutes();
  var sec = this.getSeconds();
  // FIXME: %c : preferred date and time representation for the current locale
  s["%C"] = 1 + Math.floor(y / 100); // the century number
  s["%d"] = (d < 10) ? ("0" + d) : d; // the day of the month (range 01 to 31)
  s["%e"] = d; // the day of the month (range 1 to 31)
  // FIXME: %D : american date style: %m/%d/%y
  // FIXME: %E, %F, %G, %g, %h (man strftime)
  s["%H"] = (hr < 10) ? ("0" + hr) : hr; // hour, range 00 to 23 (24h format)
  s["%I"] = (ir < 10) ? ("0" + ir) : ir; // hour, range 01 to 12 (12h format)
  s["%j"] = (dy < 100) ? ((dy < 10) ? ("00" + dy) : ("0" + dy)) : dy; // day of the year (range 001 to 366)
  s["%k"] = hr;    // hour, range 0 to 23 (24h format)
  s["%l"] = ir;    // hour, range 1 to 12 (12h format)
  s["%m"] = (m < 9) ? ("0" + (1+m)) : (1+m); // month, range 01 to 12
  s["%M"] = (min < 10) ? ("0" + min) : min; // minute, range 00 to 59
  s["%n"] = "\n";    // a newline character
  s["%p"] = pm ? "PM" : "AM";
  s["%P"] = pm ? "pm" : "am";
  // FIXME: %r : the time in am/pm notation %I:%M:%S %p
  // FIXME: %R : the time in 24-hour notation %H:%M
  s["%s"] = Math.floor(this.getTime() / 1000);
  s["%S"] = (sec < 10) ? ("0" + sec) : sec; // seconds, range 00 to 59
  s["%t"] = "\t";    // a tab character
  // FIXME: %T : the time in 24-hour notation (%H:%M:%S)
  s["%U"] = s["%W"] = s["%V"] = (wn < 10) ? ("0" + wn) : wn;
  s["%u"] = w + 1;  // the day of the week (range 1 to 7, 1 = MON)
  s["%w"] = w;    // the day of the week (range 0 to 6, 0 = SUN)
  // FIXME: %x : preferred date representation for the current locale without the time
  // FIXME: %X : preferred time representation for the current locale without the date
  s["%y"] = ('' + y).substr(2, 2); // year without the century (range 00 to 99)
  s["%Y"] = y;    // year with the century
  s["%%"] = "%";    // a literal '%' character

  var re = /%./g;
  var a = str.match(re);
  for (var i = 0; i < a.length; i++) {
    var tmp = s[a[i]];
    if (tmp) {
      re = new RegExp(a[i], 'g');
      str = str.replace(re, tmp);
    }
  }

  return str;
};

function showKey(evt) {
  var key = (typeof evt.which != "undefined") ? evt.which : event.keyCode;
  if(key==13) show_next();
}


Date.prototype.__msh_oldSetFullYear = Date.prototype.setFullYear;
Date.prototype.setFullYear = function(y) {
  var d = new Date(this);
  d.__msh_oldSetFullYear(y);
  if (d.getMonth() != this.getMonth())
    this.setDate(28);
  this.__msh_oldSetFullYear(y);
};