var calFormat = "dd-mm-yyyy";
var dayDigits=1;
var yxMonths=new Array("January", "February", "March", "April", "May", "Jun", "July", "August", "September", "October", "November", "December");
var yxDays=new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");

function getDayName(y,m,d) {
  var wd=new Date(y,m,d);
  return yxDays[wd.getDay()].substring(0,3);
}

function getMonthFromName(m3) {
  for (var i = 0; i < yxMonths.length; i++) {
    if (yxMonths[i].toLowerCase().substring(0,3) == m3.toLowerCase()) {
      return i;
    }
  }

  return 0;
}

function getFormat() {
  var calF = calFormat;

  calF = calF.replace(/\\/g, '\\\\');
  calF = calF.replace(/\//g, '\\\/');
  calF = calF.replace(/\[/g, '\\\[');
  calF = calF.replace(/\]/g, '\\\]');
  calF = calF.replace(/\(/g, '\\\(');
  calF = calF.replace(/\)/g, '\\\)');
  calF = calF.replace(/\{/g, '\\\{');
  calF = calF.replace(/\}/g, '\\\}');
  calF = calF.replace(/\</g, '\\\<');
  calF = calF.replace(/\>/g, '\\\>');
  calF = calF.replace(/\|/g, '\\\|');
  calF = calF.replace(/\*/g, '\\\*');
  calF = calF.replace(/\?/g, '\\\?');
  calF = calF.replace(/\+/g, '\\\+');
  calF = calF.replace(/\^/g, '\\\^');
  calF = calF.replace(/\$/g, '\\\$');

  calF = calF.replace(/dd/i, '\\d\\d');
  calF = calF.replace(/mm/i, '\\d\\d');
  calF = calF.replace(/yyyy/i, '\\d\\d\\d\\d');
  calF = calF.replace(/day/i, '\\w\\w\\w');
  calF = calF.replace(/mon/i, '\\w\\w\\w');

  return new RegExp(calF);
}

function getDateNumbers(date) {
  var y, m, d;

  var yIdx = calFormat.search(/yyyy/i);
  var mIdx = calFormat.search(/mm/i);
  var m3Idx = calFormat.search(/mon/i);
  var dIdx = calFormat.search(/dd/i);

  y=date.substring(yIdx,yIdx+4)-0;
  if (mIdx != -1) {
    m=date.substring(mIdx,mIdx+2)-1;
  }
  else {
    var m = getMonthFromName(date.substring(m3Idx,m3Idx+3));
  }
  d=date.substring(dIdx,dIdx+2)-0;

  return new Array(y,m,d);
}


function lastDay(d) {
  var yy=d.getFullYear(), mm=d.getMonth();
  for (var i=31; i>=28; i--) {
    var nd=new Date(yy,mm,i);
    if (mm == nd.getMonth()) {
      return i;
    }
  }
}

function firstDay(d) {
  var yy=d.getFullYear(), mm=d.getMonth();
  var fd=new Date(yy,mm,1);
  return fd.getDay();
}

function dayDisplay(i) {
  if (dayDigits == 0) {
    return yxDays[i];
  }
  else {
    return yxDays[i].substring(0,dayDigits);
  }
}

function get2Digits(n) {
  return ((n<10)?"0":"")+n;
}