var subsystem = 'nava';

function preSelect(out,over) { // prepares src replacement // return an array of images
  var pre = new Array(new Image,new Image);
  // alert('PRE: '+out+' '+over);
  pre[0].src = out;
  pre[1].src = over;
  return pre;
}

function postSelect(img,pre,flag) { // replaces the src of the given image // according to the flag
  if (!flag) {
    img.src = pre[0].src;
  } else {
    img.src = pre[1].src;
  }
}

function jumpTo(sub) { // quick jump to the given page in the system
  if ( !sub )
    sub = '';
  top.location.href = '/'+subsystem+'/' + sub;
}

function hashTo(hsh) { // quick scroll to the given anchor
  if (hsh) {
    window.location.hash = '#' + hsh;
  }
}

function selectID(sid,nam) {
//alert('SID:'+sid+' NAM:'+nam);
  with (document.forms.list) {
    elements[nam].value = sid;
    submit();
  }
  return true;
}

function hashID(sid,nam) {
  selectID(sid,nam);
  hashTo(sid);
}

function today(date) { // returns the current/given day (yyyy-mm-dd)
  if (!date) { var date = new Date(); }
  var s = date.getFullYear() + '-' + (date.getMonth()+1) + '-' + date.getDate();
  return s.replace(/^(.*)-(\d)-(.*)$/,'$1-0$2-$3').replace(/^(.*)-(\d)$/,'$1-0$2');
}

function now(date) { // returns the current/given sec (hh:mm:ss)
  if (!date) { var date = new Date(); }
  var s = date.getHours() + ':' + date.getMinutes() + ':' + date.getSeconds();
  return s.replace(/^(\d):(.*)$/,'0$1:$2').replace(/^(.*):(\d):(.*)$/,'$1:0$2:$3').replace(/^(.*):(\d)$/,'$1:0$2');
}

function now_hhmm(date) { // returns the current/given minute (hh:mm)
  if (!date) { var date = new Date(); }
  var s = date.getHours() + ':' + date.getMinutes();
  return s.replace(/^(\d):(.*)$/,'0$1:$2').replace(/^(.*):(\d)$/,'$1:0$2');
}

//var okbutton = preSelect('/'+subsystem+'/pic/ok_n.gif','/'+subsystem+'/pic/ok_o.gif');
//var loginbutton = preSelect('/'+subsystem+'/pic/ok_n.gif','/'+subsystem+'/pic/ok_o.gif');
var arrow = preSelect('/'+subsystem+'/pic/arrow-black.gif','/'+subsystem+'/pic/arrow-red.gif');
//var menu = preSelect('/'+subsystem+'/pic/menu_n.gif','/'+subsystem+'/pic/menu_o.gif');

var re_tc = /^([0-9][0-9]):?([0-5][0-9]):?([0-5][0-9]):?(([0-1][0-9]|(2[0-4])))$/;
var re_opttc = /^(([0-9][0-9]):?([0-5][0-9]):?([0-5][0-9]):?(([0-1][0-9]|(2[0-4]))))?$/;
function fullTC(field) {
  if (re_tc.test(field.value)) {
    field.value = field.value.replace(re_tc,'$1:$2:$3:$4');
  }
}

var re_sec = /^(([01][0-9])|(2[0-3])):?([0-5][0-9]):?([0-5][0-9])$/;
var re_optsec = /^((([01][0-9])|(2[0-3])):?([0-5][0-9]):?([0-5][0-9]))?$/;
function fullSec(field) {
  if (re_sec.test(field.value)) {
    field.value = field.value.replace(re_sec,'$1:$4:$5');
  }
}

var re_day = /^([1-2][0-9]{3})-?((0[1-9])|(1[0-2]))-?((0[1-9])|([12][0-9])|(3[01]))$/;
var re_optday = /^(([1-2][0-9]{3})-?((0[1-9])|(1[0-2]))-?((0[1-9])|([12][0-9])|(3[01])))?$/;
function fullDay(field) {
  if (re_day.test(field.value)) {
    field.value = field.value.replace(re_day,'$1-$2-$5');
  }
}

var re_hm = /^(([01][0-9])|(2[0-3])):?([0-5][0-9])$/;
var re_opthm = /^((([01][0-9])|(2[0-3])):?([0-5][0-9]))?$/;
function fullHM(field) {
  if (re_hm.test(field.value)) {
    field.value = field.value.replace(re_hm,'$1:$4');
  }
}
 
var auto_focus = null;

function getProperties(o) {
  var s = '';
  for (var i in o) {
    s += '' + i + ' = ' + o[i] + ';; ';
  }
  return s;
}

function showProperties(o) {
  alert(getProperties(o));
}