SQL Server Reporting Service 2005 Hide the Document Map

When you design a report using the SQL Server Reporting Service 2005, you may see the Document Map bar shows up after rendering.This is sometimes very annoying, I think a lot of people want to get rid of it.It happens when you use the group in the group. The SSRS would add a Document Map Label automatically when you add a grouping to the report.

You go to each place that would use the Document map label, delete them, then the Document Map bar would not show again.