Viewing additional GridView columns on click with javascript?
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I'm trying to figure out how to select and view row details in my gridview. Basically I have a gridview with 9 columns, but 6 are hidden. When I click on a row, I want it to load those additional column values into my javascript so I can put them in a seperate table below. I feel like it's relatively simple but I'm just not understanding something and I was hoping I could be pointed in the right direction.

Here's some code I have if you need it.

    <asp:GridView ID="BillabilityView" BackColor="White" runat="server" AutoGenerateColumns="false" CssClass="tbl">
        <columns> 
          <asp:boundfield datafield="UserName" headertext="User Name" /> 
          <asp:boundfield datafield="UserID" headertext="User ID" /> 
          <asp:boundfield datafield="HrsTLB" headertext="Billable Hours" /> 
          <asp:boundfield datafield="HrsTLNB" headertext="Nonbillable Hours" /> 
          <asp:boundfield datafield="HrsTL" headertext="Total Hours" /> 
          <asp:boundfield datafield="HrsExp" headertext="Expected Hours" /> 
          <asp:boundfield datafield="Billability" headertext="Billability" /> 
        </columns>
    </asp:GridView>