function dateToRelative(localTime){
    var diff=new Date().getTime()-localTime;
    var ret="";

    var min=60000;
    var hour=3600000;
    var day=86400000;
    var wee=604800000;
    var mon=2629800000;
    var yea=31557600000;

    if (diff<-yea*2)
      ret ="in ## years".replace("##",(-diff/yea).toFixed(0));

    else if (diff<-mon*9)
      ret ="in ## months".replace("##",(-diff/mon).toFixed(0));

    else if (diff<-wee*5)
      ret ="in ## weeks".replace("##",(-diff/wee).toFixed(0));

    else if (diff<-day*2)
      ret ="in ## days".replace("##",(-diff/day).toFixed(0));

    else if (diff<-hour)
      ret ="in ## hours".replace("##",(-diff/hour).toFixed(0));

    else if (diff<-min*35)
      ret ="in about one hour";

    else if (diff<-min*25)
      ret ="in about half hour";

    else if (diff<-min*10)
      ret ="in some minutes";

    else if (diff<-min*2)
      ret ="in few minutes";

    else if (diff<=min)
      ret ="just now";

    else if (diff<=min*5)
      ret ="few minutes ago";

    else if (diff<=min*15)
      ret ="some minutes ago";

    else if (diff<=min*35)
      ret ="about half hour ago";

    else if (diff<=min*75)
      ret ="about an hour ago";

    else if (diff<=hour*5)
      ret ="few hours ago";

    else if (diff<=hour*24)
      ret ="## hours ago".replace("##",(diff/hour).toFixed(0));

    else if (diff<=day*7)
      ret ="## days ago".replace("##",(diff/day).toFixed(0));

    else if (diff<=wee*5)
      ret ="## weeks ago".replace("##",(diff/wee).toFixed(0));

    else if (diff<=mon*12)
      ret ="## months ago".replace("##",(diff/mon).toFixed(0));

    else
      ret ="## years ago".replace("##",(diff/yea).toFixed(0));

    return ret;
  }
  //override date format i18n
  
  Date.monthNames = ["January","February","March","April","May","June","July","August","September","October","November","December"];
  // Month abbreviations. Change this for local month names
  Date.monthAbbreviations = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
  // Full day names. Change this for local month names
  Date.dayNames =["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
  // Day abbreviations. Change this for local month names
  Date.dayAbbreviations = ["Sun","Mon","Tue","Wed","Thu","Fri","Sat"];
  // Used for parsing ambiguous dates like 1/2/2000 - default to preferring 'American' format meaning Jan 2.
  // Set to false to prefer 'European' format meaning Feb 1
  Date.preferAmericanFormat = false;

  Date.firstDayOfWeek =0;
Date.defaultFormat = "dd/MM/yyyy";

  Number.decimalSeparator = ".";
  Number.groupingSeparator = ",";
  Number.minusSign = "-";
  Number.currencyFormat = "###,##0.00";

  
  var i18n = {
    FORM_IS_CHANGED:"You have some unsaved data on the page!",
    CLOSE:"close",
    YES:"yes",
    NO:"no",
    DOWNLOAD:"download",
    ERR_FIELD_MAX_SIZE_EXCEEDED:"Field max size exceeded",
    FLD_CONFIRM_DELETE:"FLD_CONFIRM_DELETE",
    INVALID_DATA:"INVALID_DATA",
    ERROR_ON_FIELD:"Error on field",
    DO_YOU_CONFIRM:"DO_YOU_CONFIRM",
    HIDE:"hide",
    SEE_MORE:"see more",
    MAX_LENGTH_EXCEEDED:"max length exceeded",
    MAX_VAL_REACHED:"Max suggested value reached!",
    REDIR_TO_NEW_DOCUMENT:"Save done. Do you want to be redirected to the new document?",
    REDIR_TO_NEW_QUIZ:"Save done. Do you want to be redirected to the new quiz?",
    // FO
    INVALID_MAIL:"Invalid e-mail",
    ERROR_LOADING_VERSION:"Sorry, there was an error loading the version",
    MISSING_AUDIO:"Missing audio",
    YOUR_BROWSER_DOESNOT_SUPPORT_FULLSCREEN:"Your browser does not support subtitles in fullscreen mode!",
    YOUR_BROWSER_DOESNT_SUPPORT_VIDEOALONG:"your browser does not support html5 video features!",
    MISSING_GLOSSARY_URL_IN_SETTINGS:"Glossary can\'t work properly as the \"glossary url\" value is missing in global settings",
    IMAGE:"image",
    OF:"of",
    SEARCH_IN_SITE:"search",
    FULL_SCREEN:"full screen",
    VALUES_DONT_MATCH:"The values ​​do not match"
  };