//---------------------------------------------------    
// 判断闰年    
//---------------------------------------------------    
Date.prototype.isLeapYear = function()       
{       
return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));       
}       
  
//---------------------------------------------------    
// 日期格式化    
// 格式 YYYY/yyyy/YY/yy 表示年份    
// MM/M 月份    
// W/w 星期    
// dd/DD/d/D 日期    
// hh/HH/h/H 时间    
// mm/m 分钟    
// ss/SS/s/S 秒    
//---------------------------------------------------    
Date.prototype.Format = function(formatStr)       
{       
var str = formatStr;       
var Week = ['日','一','二','三','四','五','六'];      
  
     str=str.replace(/yyyy|YYYY/,this.getFullYear());       
     str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));       
  
     str=str.replace(/MM/,this.getMonth()+1>9?(this.getMonth()+1).toString():'0' + (this.getMonth()+1));       
     str=str.replace(/M/g,this.getMonth()+1);       
  
     str=str.replace(/w|W/g,Week[this.getDay()]);       
  
     str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate());       
     str=str.replace(/d|D/g,this.getDate());       
  
     str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours());       
     str=str.replace(/h|H/g,this.getHours());       
     str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes());       
     str=str.replace(/m/g,this.getMinutes());       
  
     str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0' + this.getSeconds());       
     str=str.replace(/s|S/g,this.getSeconds());       
  
return str;       
}       
  
//+---------------------------------------------------    
//| 求两个时间的天数差 日期格式为 YYYY-MM-dd    
//+---------------------------------------------------    
function daysBetween(DateOne,DateTwo)      
{       
var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-'));      
var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1);      
var OneYear = DateOne.substring(0,DateOne.indexOf ('-'));      
  
var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-'));      
var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1);      
var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-'));      
  
var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);       
return Math.abs(cha);      
}      
  
  
//+---------------------------------------------------    
//| 日期计算    
//+---------------------------------------------------    
Date.prototype.DateAdd = function(strInterval, Number) {       
var dtTmp = this;      
switch (strInterval) {       
case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number));      
case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number));      
case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number));      
case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number));      
case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number));      
case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());      
case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());      
case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());      
     }      
}      
  
//+---------------------------------------------------    
//| 比较日期差 dtEnd 格式为日期型或者 有效日期格式字符串    
//+---------------------------------------------------    
Date.prototype.DateDiff = function(strInterval, dtEnd) {       
var dtStart = this;      
if (typeof dtEnd == 'string' )//如果是字符串转换为日期型    
     {       
         dtEnd = StringToDate(dtEnd);      
     }      
switch (strInterval) {       
case 's' :return parseInt((dtEnd - dtStart) / 1000);      
case 'n' :return parseInt((dtEnd - dtStart) / 60000);      
case 'h' :return parseInt((dtEnd - dtStart) / 3600000);      
case 'd' :return parseInt((dtEnd - dtStart) / 86400000);      
case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7));      
case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);      
case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear();      
     }      
}      
  
//+---------------------------------------------------    
//| 日期输出字符串，重载了系统的toString方法    
//+---------------------------------------------------    
Date.prototype.toString = function(showWeek)      
{       
var myDate= this;      
var str = myDate.toLocaleDateString();      
if (showWeek)      
     {       
var Week = ['日','一','二','三','四','五','六'];      
         str += ' 星期' + Week[myDate.getDay()];      
     }      
return str;      
}