if u are using link button then use
<asp:LinkButton ID="submit" runat="server" Text="Submit" OnClientClick="javascript:transfer('<%=Jobid%>')"></asp:LinkButton>
<script language="javascript">
function transfer(opt)
{
window.open("/pagename.aspx?jobid="+opt,'Title','width=200,height=100')
}
</script>
Others ways to send values from one page to another page.
Transferring page values to another page[
^]