The present invention provides a method and system for conditional
navigation through hierarchical lists. Filtering parameters are
associated with members in a list, such as a hierarchical list. The
filtering parameters affect the number of choices that are shown to a
user in another list when that list is selected and displayed to the
user. A selection of a member having filtering parameters within a master
list affects the choices shown to a user in other master lists and/or
filtered lists when they are displayed. The filtering may occur across
different processes within the same machine and across different
machines. For example, a user may make a selection within a master list
on a first machine that causes a list on a second machine to be filtered
for presentation to another user.