IF CSTR(Month(RS_Counter("DATE"))) <> CSTR(Month(DATE())) THEN   
    RS_Counter("DATE") = DATE()                     
    RS_Counter("YESTERDAY") = RS("TODAY")            
    RS_Counter("BMONTH") = RS("MONTH")
    RS_Counter("MONTH") = 1                          
    RS_Counter("TODAY") = 1                          
    RS_Counter.Update                                
ELSE
    IF CSTR(Day(RS_Counter("DATE"))) <> CSTR(Day(DATE())) THEN   
        RS_Counter("DATE") = DATE()                     
        RS_Counter("YESTERDAY") = RS("TODAY")            
        RS_Counter("TODAY") = 1                          
        RS_Counter.Update                                
    END IF
这段代码在描述什么呀？尤其是CSTR(Month(RS_Counter("DATE"))) <> CSTR(Month(DATE()))函数？
谢谢拉！！！