Use Hyperlink Field to open window with JavaScript

I am trying to open up a pop up window when a link is clicked from my datagrid view. I was able to do this with the 1.1 datagrid but cannot get it to work with the new datagridview.

I have tried this tens of different ways and still can't get it to work. This is how my last unsuccessful try looks

VB Code:

<asp:HyperlinkField 
DataTextField ="ueStore" 
DataNavigateUrlFormatString="javascript:var ..(cont on next line)..
w=window.open('store_info.aspx?store={0}','','width=400,height=400');" />

Any ideas of how to accomplish this?

<asp:HyperLink ID="newWindow" Runat="server" NavigateUrl="javascript:w=window.open(store={0}','','width=400,height=400');" >new Window</asp:HyperLink>