在母版页中多次使用asp：content标记

I'm new to ASP.NET and want to have an asp:content control for the page title, but I want that value to be used for the tag and for a page header. When I tried to do this with two tags with the same id, it complained that I couldn't have two tags with the same id. Is there a way to achieve this with contentplaceholders, and if not what would be the easiest way to use a single parameter to the masterpage twice in one page?I'm new to ASP.NET and want to have an asp:cont