//+--------------------------------------------------- 
    //| 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); 
}