/* Copyright (c) 2006 Jörn Zaefferer and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT and GPL licenses */
 
Date.dayNames=['MOD_DAYS'];
Date.abbrDayNames=['0'];
Date.monthNames=[];
Date.abbrMonthNames=['0'];
Date.firstDayOfWeek=1;
Date.format='dd/mm/yyyy';
Date.fullYearStart='20';
(function(){function add(name,method){if(!Date.prototype[name]){Date.prototype[name]=method}};
add("isLeapYear",function(){var y=this.getFullYear();
return(y%4==0&&y%100!=0)||y%400==0});
add("isWeekend",function(){return this.getDay()==0||this.getDay()==6});
add("isWeekDay",function(){return!this.isWeekend()});
add("getDaysInMonth",function(){return[31,(this.isLeapYear()?29:28),31,30,31,30,31,31,30,31,30,31][this.getMonth()]});
add("getDayName",function(abbreviated){return abbreviated?Date.abbrDayNames[this.getDay()]:Date.dayNames[this.getDay()]});
add("getMonthName",function(abbreviated){return abbreviated?Date.abbrMonthNames[this.getMonth()]:Date.monthNames[this.getMonth()]});
add("getDayOfYear",function(){var tmpdtm=new Date("1/1/"+this.getFullYear());
return Math.floor((this.getTime()-tmpdtm.getTime())/86400000)});
add("getWeekOfYear",function(){return Math.ceil(this.getDayOfYear()/7)});
add("setDayOfYear",function(day){this.setMonth(0);
this.setDate(day);
return this});
add("addYears",function(num){this.setFullYear(this.getFullYear()+num);
return this});
add("addMonths",function(num){var tmpdtm=this.getDate();
this.setMonth(this.getMonth()+num);
if(tmpdtm>this.getDate())this.addDays(-this.getDate());
return this});
add("addDays",function(num){this.setDate(this.getDate()+num);
return this});
add("addHours",function(num){this.setHours(this.getHours()+num);
return this});
add("addMinutes",function(num){this.setMinutes(this.getMinutes()+num);
return this});
add("addSeconds",function(num){this.setSeconds(this.getSeconds()+num);
return this});
add("zeroTime",function(){this.setMilliseconds(0);
this.setSeconds(0);
this.setMinutes(0);
this.setHours(0);
return this});
add("asString",function(){var r=Date.format;
return r.split('yyyy').join(this.getFullYear()).split('yy').join((this.getFullYear()+'').substring(2)).split('mmm').join(this.getMonthName(true)).split('mm').join(_zeroPad(this.getMonth()+1)).split('dd').join(_zeroPad(this.getDate()))});
Date.fromString=function(s){var f=Date.format;
var d=new Date('01/01/1977');
var iY=f.indexOf('yyyy');
if(iY>-1){d.setFullYear(Number(s.substr(iY,4)))}else{d.setFullYear(Number(Date.fullYearStart+s.substr(f.indexOf('yy'),2)))}var iM=f.indexOf('mmm');
if(iM>-1){var mStr=s.substr(iM,3);
for(var i=0;
i<Date.abbrMonthNames.length;
i++){if(Date.abbrMonthNames[i]==mStr)break}d.setMonth(i)}else{d.setMonth(Number(s.substr(f.indexOf('mm'),2))-1)}d.setDate(Number(s.substr(f.indexOf('dd'),2)));
if(isNaN(d.getTime())){return false}return d};
var _zeroPad=function(num){var s='0'+num;
return s.substring(s.length-2)}})();