I'm not sure if anyone else has already broached this subject ... but the custom context menu from the script at this page: (http://www.dynamicdrive.com/dynamicindex1/contextmenu.htm)
doesn't work in mozilla properly ... the context menu pops up and looks as it should except that it is positioned (stuck might be a better word) to the top-left corner of the screen.
As I am brand new to javascript I don't know how to fix this and can barely understand what is happening in the script.