How can calculate the week starting days between two days????is it possible????
For ex- Day1    2011-03-28
        Day2    2011-04-25

week starting days   
                         2011-03-28
                         2011-4-4
                         2011-4-11
                         2011-4-18
                         2011-04-25
                       
How can calculate the week starting days between two days????is it possible????
===

For ex- Day1    2011-03-28
        Day2    2011-04-25

week starting days   
                         2011-03-28
                         2011-4-4
                         2011-4-11
                         2011-4-18
                         2011-04-25
                       