String.repeat = function(chr,count)
{    
    var str = ""; 
    for(var x=0;x<count;x++) {str += chr}; 
    return str;
}

String.prototype.padL = function(width,pad)
{
    if (!width ||width<1)
        return this;   
 
    if (!pad) pad=" ";        
    var length = width - this.length
    if (length < 1) return this.substr(0,width);
 
    return (String.repeat(pad,length) + this).substr(0,width);    
}    

String.prototype.padR = function(width,pad)
{
    if (!width || width<1)
        return this;        
 
    if (!pad) pad=" ";
    var length = width - this.length
    if (length < 1) this.substr(0,width);
 
    return (this + String.repeat(pad,length)).substr(0,width);
} 

Date.prototype.formatDate = function(format)
{
    var date = this;
    if (!format)
      format="MM/dd/yyyy";               
 
    var month = date.getMonth() + 1;
    var year = date.getFullYear();    
 
    format = format.replace("MM",month.toString().padL(2,"0"));        
 
    if (format.indexOf("yyyy") > -1)
        format = format.replace("yyyy",year.toString());
    else if (format.indexOf("yy") > -1)
        format = format.replace("yy",year.toString().substr(2,2));
 
    format = format.replace("dd",date.getDate().toString().padL(2,"0"));
 
    var hours = date.getHours();       
    if (format.indexOf("t") > -1)
    {
       if (hours > 11)
        format = format.replace("t","pm")
       else
        format = format.replace("t","am")
    }
	if (format.indexOf("T") > -1)
    {
       if (hours > 11)
        format = format.replace("T","PM")
       else
        format = format.replace("T","AM")
    }
    if (format.indexOf("HH") > -1)
        format = format.replace("HH",hours.toString().padL(2,"0"));
    if (format.indexOf("hh") > -1) {
        if (hours > 12) hours -= 12;
        if (hours == 0) hours = 12;
        format = format.replace("hh",hours.toString().padL(2,"0"));        
	}
    if (format.indexOf("mm") > -1)
       format = format.replace("mm",date.getMinutes().toString().padL(2,"0"));
    if (format.indexOf("ss") > -1)
       format = format.replace("ss",date.getSeconds().toString().padL(2,"0"));
    return format;
}

Date.prototype.Add = function (timeU,byMany) {
	var dateObj = this;

	var millisecond=1;
	var second=millisecond*1000;
	var minute=second*60;
	var hour=minute*60;
	var day=hour*24;
	var year=day*365;

	var newDate;
	var dVal=dateObj.valueOf();
	switch(timeU) {
		case "ms": newDate=new Date(dVal+millisecond*byMany); break;
		case "s": newDate=new Date(dVal+second*byMany); break;
		case "mi": newDate=new Date(dVal+minute*byMany); break;
		case "h": newDate=new Date(dVal+hour*byMany); break;
		case "d": newDate=new Date(dVal+day*byMany); break;
		case "y": newDate=new Date(dVal+year*byMany); break;
	}
	return newDate;
}

// Parse a string and convert it to a Date object.
// If no format is passed, try a list of common formats.
// If string cannot be parsed, return null.
// Avoids regular expressions to be more portable.
Date.parseString = function(val, format) {
  // If no format is specified, try a few common formats
  if (typeof(format)=="undefined" || format==null || format=="") {
    var generalFormats=new Array('y-M-d','MMM d, y','MMM d,y','y-MMM-d','d-MMM-y','MMM d','MMM-d','d-MMM');
    var monthFirst=new Array('M/d/y','M-d-y','M.d.y','M/d','M-d');
    var dateFirst =new Array('d/M/y','d-M-y','d.M.y','d/M','d-M');
    var checkList=new Array(generalFormats,Date.preferAmericanFormat?monthFirst:dateFirst,Date.preferAmericanFormat?dateFirst:monthFirst);
    for (var i=0; i<checkList.length; i++) {
      var l=checkList[i];
      for (var j=0; j<l.length; j++) {
        var d=Date.parseString(val,l[j]);
        if (d!=null) { 
          return d; 
        }
      }
    }
    return null;
  };

  this.isInteger = function(val) {
    for (var i=0; i < val.length; i++) {
      if ("1234567890".indexOf(val.charAt(i))==-1) { 
        return false; 
      }
    }
    return true;
  };
  this.getInt = function(str,i,minlength,maxlength) {
    for (var x=maxlength; x>=minlength; x--) {
      var token=str.substring(i,i+x);
      if (token.length < minlength) { 
        return null; 
      }
      if (this.isInteger(token)) { 
        return token; 
      }
    }
  return null;
  };
  val=val+"";
  format=format+"";
  var i_val=0;
  var i_format=0;
  var c="";
  var token="";
  var token2="";
  var x,y;
  var year=new Date().getFullYear();
  var month=1;
  var date=1;
  var hh=0;
  var mm=0;
  var ss=0;
  var ampm="";
  while (i_format < format.length) {
    // Get next token from format string
    c=format.charAt(i_format);
    token="";
    while ((format.charAt(i_format)==c) && (i_format < format.length)) {
      token += format.charAt(i_format++);
    }
    // Extract contents of value based on format token
    if (token=="yyyy" || token=="yy" || token=="y") {
      if (token=="yyyy") { 
        x=4;y=4; 
      }
      if (token=="yy") { 
        x=2;y=2; 
      }
      if (token=="y") { 
        x=2;y=4; 
      }
      year=this.getInt(val,i_val,x,y);
      if (year==null) { 
        return null; 
      }
      i_val += year.length;
      if (year.length==2) {
        if (year > 70) { 
          year=1900+(year-0); 
        }
        else { 
          year=2000+(year-0); 
        }
      }
    }
    else if (token=="MMM" || token=="NNN"){
      month=0;
      var names = (token=="MMM"?(Date.monthNames.concat(Date.monthAbbreviations)):Date.monthAbbreviations);
      for (var i=0; i<names.length; i++) {
        var month_name=names[i];
        if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {
          month=(i%12)+1;
          i_val += month_name.length;
          break;
        }
      }
      if ((month < 1)||(month>12)){
        return null;
      }
    }
    else if (token=="EE"||token=="E"){
      var names = (token=="EE"?Date.dayNames:Date.dayAbbreviations);
      for (var i=0; i<names.length; i++) {
        var day_name=names[i];
        if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) {
          i_val += day_name.length;
          break;
        }
      }
    }
    else if (token=="MM"||token=="M") {
      month=this.getInt(val,i_val,token.length,2);
      if(month==null||(month<1)||(month>12)){
        return null;
      }
      i_val+=month.length;
    }
    else if (token=="dd"||token=="d") {
      date=this.getInt(val,i_val,token.length,2);
      if(date==null||(date<1)||(date>31)){
        return null;
      }
      i_val+=date.length;
    }
    else if (token=="hh"||token=="h") {
      hh=this.getInt(val,i_val,token.length,2);
      if(hh==null||(hh<1)||(hh>12)){
        return null;
      }
      i_val+=hh.length;
    }
    else if (token=="HH"||token=="H") {
      hh=this.getInt(val,i_val,token.length,2);
      if(hh==null||(hh<0)||(hh>23)){
        return null;
      }
      i_val+=hh.length;
    }
    else if (token=="KK"||token=="K") {
      hh=this.getInt(val,i_val,token.length,2);
      if(hh==null||(hh<0)||(hh>11)){
        return null;
      }
      i_val+=hh.length;
      hh++;
    }
    else if (token=="kk"||token=="k") {
      hh=this.getInt(val,i_val,token.length,2);
      if(hh==null||(hh<1)||(hh>24)){
        return null;
      }
      i_val+=hh.length;
      hh--;
    }
    else if (token=="mm"||token=="m") {
      mm=this.getInt(val,i_val,token.length,2);
      if(mm==null||(mm<0)||(mm>59)){
        return null;
      }
      i_val+=mm.length;
    }
    else if (token=="ss"||token=="s") {
      ss=this.getInt(val,i_val,token.length,2);
      if(ss==null||(ss<0)||(ss>59)){
        return null;
      }
      i_val+=ss.length;
    }
    else if (token=="a") {
      if (val.substring(i_val,i_val+2).toLowerCase()=="am") {
        ampm="AM";
      }
      else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {
        ampm="PM";
      }
      else {
        return null;
      }
      i_val+=2;
    }
    else {
      if (val.substring(i_val,i_val+token.length)!=token) {
        return null;
      }
      else {
        i_val+=token.length;
      }
    }
  }
  // If there are any trailing characters left in the value, it doesn't match
  if (i_val != val.length) { 
    return null; 
  }
  // Is date valid for month?
  if (month==2) {
    // Check for leap year
    if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
      if (date > 29){ 
        return null; 
      }
    }
    else { 
      if (date > 28) { 
        return null; 
      } 
    }
  }
  if ((month==4)||(month==6)||(month==9)||(month==11)) {
    if (date > 30) { 
      return null; 
    }
  }
  // Correct hours value
  if (hh<12 && ampm=="PM") {
    hh=hh-0+12; 
  }
  else if (hh>11 && ampm=="AM") { 
    hh-=12; 
  }
  return new Date(year,month-1,date,hh,mm,ss);
};

// Check if a date object is before another date object
Date.prototype.isBefore = function(date2) {
  if (date2==null) { 
    return false; 
  }
  return (this.getTime()<date2.getTime());
};

// Check if a date object is after another date object
Date.prototype.isAfter = function(date2) {
  if (date2==null) { 
    return false; 
  }
  return (this.getTime()>date2.getTime());
};

// Check if two date objects have equal dates and times
Date.prototype.equals = function(date2) {
  if (date2==null) { 
    return false; 
  }
  return (this.getTime()==date2.getTime());
};

// Check if two date objects have equal dates, disregarding times
Date.prototype.equalsIgnoreTime = function(date2) {
  if (date2==null) { 
    return false; 
  }
  var d1 = new Date(this.getTime()).clearTime();
  var d2 = new Date(date2.getTime()).clearTime();
  return (d1.getTime()==d2.getTime());
};

Date.parseJson = function (s)
{
	var str = s.replace("/Date(", "");
	str = str.replace(")/", "");

	return new Date(parseInt(str));
};

// Clear all time information in a date object
Date.prototype.clearTime = function() {
  this.setHours(0); 
  this.setMinutes(0);
  this.setSeconds(0); 
  this.setMilliseconds(0);
  return this;
};

Date.prototype.inArray = function(ar) {
	for(var i = 0; i < ar.length; i++)
	{
		if(ar[i].equals(this)) return true;
	}
	return false;
};