var oneMinute=1000*60;var intervalObject=new Object();intervalObject["yyyy"]={units:1000*60*60*24*365,measure:"year"};intervalObject["m"]={units:1000*60*60*24*30,measure:"month"};intervalObject["d"]={units:1000*60*60*24,measure:"day"};intervalObject["Q"]={units:intervalObject["m"].units*3,measure:"quarter"};intervalObject["H"]={units:oneMinute*60,measure:"hour"};intervalObject["N"]={units:oneMinute,measure:"minute"};intervalObject["S"]={units:1000,measure:"second"};function DateDiff(dateAddObj){this.interval=dateAddObj.interval;this.date1=dateAddObj.date1;this.date2=dateAddObj.date2;this.calculate=calculate;this.calculate();}
Date.prototype.DateDiff=DateDiff;function calculate(){var paramDate1=new String(this.date1);splitDate1=paramDate1.split("/");paramDateYear1=splitDate1[2];paramDateMonth1=splitDate1[1]-1;paramDateDay1=splitDate1[0];if(paramDateMonth1>12){alert("Invalid Month!");return false;}
if(paramDateDay1>31){alert("Invalid Day!");return false;}
var paramDate2=new String(this.date2);splitDate2=paramDate2.split("/");paramDateYear2=splitDate2[2];paramDateMonth2=splitDate2[1]-1;paramDateDay2=splitDate2[0];if(paramDateMonth2>12){alert("Invalid Month!");return false;}
if(paramDateDay2>31){alert("Invalid Day!");return false;}
var paramDate1Object=new Date(paramDateYear1,paramDateMonth1,paramDateDay1);paramDate1Object.setHours(0);paramDate1Object.setMinutes(0);paramDate1Object.setSeconds(0);var paramDate1ObjectTime=paramDate1Object.getTime();var paramDate2Object=new Date(paramDateYear2,paramDateMonth2,paramDateDay2);paramDate2Object.setHours(0);paramDate2Object.setMinutes(0);paramDate2Object.setSeconds(0);var paramDate2ObjectTime=paramDate2Object.getTime();if(paramDate2Object>paramDate1Object){DSTAdjust=(paramDate2Object.getTimezoneOffset()-paramDate1Object.getTimezoneOffset())*oneMinute;}
else{DSTAdjust=(paramDate1Object.getTimezoneOffset()-paramDate2Object.getTimezoneOffset())*oneMinute;}
if(typeof intervalObject[this.interval]!="undefined"){if(typeof intervalObject[this.interval].units=="undefined"){alert("Interval is invalid!");return false;}
var diff=Math.abs(paramDate2ObjectTime-paramDate1ObjectTime)-DSTAdjust;var timeDiff=Math.floor(diff/intervalObject[this.interval].units);if(timeDiff>1){var rname=intervalObject[this.interval].measure+"s";}
else{var rname=intervalObject[this.interval].measure;}
this.difference=parseInt(timeDiff);}
else{this.difference="Wrong format of interval!";}}