Open a pop up from another pop up

[txzonline]

I want to open a pop up from another pop up and i used below code, but when i click the pop up refresh and the items appear in it instead of another pop up.I want tow pop up, but this code gave me only one.Can any body helps me?thanksthe code:\[code\] function pop_up(url) { newwindow = window.open(url, 'name', 'height=517,width=885,scrollbars=yes,toolbar=no,menubar=no,resizable=yes,location=no,directories=no,status=no,titlebar=no,left=400,top=120'); if (window.focus) { newwindow.focus() } return false; }\[/code\]click event code:\[code\] Page.ClientScript.RegisterStartupScript(GetType(), "popup", "pop_up_Info('" + "PopUpEmailing.aspx" + "');", true);\[/code\]