Master detail datagrid in asp.net c#

Question

Hi,
  I want master detail relationship datagrid in asp.net page. I am using common datagrid available in asp.net. I the grid if the parent table have child table the(+) syambol should be visible and when click on (+) the child table data should be displayed as datagrid. This i have achieved but there are usuability and compatibility issues. The code which i have done works only in IE, it does not work in firefox. I want the way which works in all the browsers and the better way to achieve this.

Thank you