I've been out the last two weeks, so sorry for my late reply.
If you have a calendar added to your application, you can create a Master Dimension - Drilldown, which will do exactly what you want. First it would display all years. Selecting a year would display all months in that year. Selecting a month would display all weeks in that month and selecting a week would display all days in that week.
You'd need to add the [Year]-[Month]-[Week]-[Day] fields from your calendar to the drilldown dimension you're creating.