passing values to javascript

Dear all,

I have a gridview and on the gridview i have a link button. On click of the linkbutton, I am calling a javascript function.
I want to pass values to my javascript function. How can I do that?
<asp:LinkButton ID="lnkbtnShow" CommandArgument='<%# Eval("emp_no").ToString() + ";" + Eval("emp_name").ToString() %>'                      OnClientClick="showempdetails();return true;" runat="server">
can i write something like this
<asp:LinkButton ID="lnkbtnShow" CommandArgument='<%# Eval("emp_no").ToString() + ";" + Eval("emp_name").ToString() %>'                      OnClientClick="sho ...