Hi
U need to redirect same page ? or when u click button need to load some details in gridview in same page itlsef ?
If redirect same page in menu click,add this code in menu click event in server side code
Response.Redirect("look.aspx");
in client side,add this code in menu client side click event
function Redirect() {
window.location="look.aspx";
}
Regards
Aravindb