function checkTime(obj){    
          var startTime= $(obj).parent().siblings().next().next().children().val();//到项目时间  
          var endTime= $(obj).parent().siblings().next().next().next().children().val();//离项目时间  
          var startDate=new Date(startTime.replace("-", "/").replace("-", "/"));    
          var endDate=new Date(endTime.replace("-", "/").replace("-", "/"));    
      
          var number = 0;      
          var yearToMonth = (endDate.getFullYear() - startDate.getFullYear()) * 12;      
          number += yearToMonth;      
          monthToMonth = endDate.getMonth() - startDate.getMonth();      
          number += monthToMonth;      
         //endDay = endDate.getDate();      
         //startDay = startDate.getDate();      
         //dayStep = endDay - startDay;      
         //if (dayStep >= 0) {      
         //    if (dayStep >= 15) {      
         //        number += 1;      
         //    }      
         //} else {      
         //    if (dayStep <= -15) {      
         //        number -= 1;      
         //    }      
         //}   
         $(obj).blur();  
         alert(parseInt(number  + 1) + " 人月 ");  
         return false;  
    }