To Popup a window without tool buttons

public void Popup()
{
string popupScript;
popupScript = "script language='javascript'>";
popupScript += "window.open('examination.aspx','popup','width=1015, height=700,menubar=no,resizable=yes')";
popupScript += "script";
Response.Write(popupScript);
//Page.RegisterStartupScript("Popup", popupScript);
}