There are many javascript online resources for code that will enable you to improve the presentation and navigation of Web pages. Included here are a few we consider standards that are stable with popular browsers.
Additional resources follow our selected examples.
Cut and paste this script in the location you wish to call for the PopUp window. Cut and paste this into the BODY of any file in a frameset and it will close the window containing the frameset. Text can be replaced with a button or other image. Cut and paste this into the BODY of the file where you would like for the menu to appear. Add option values as needed.