Loading the selected date in a variable

[Arun]

With calendar_date_select_tag, what is the equivalent tag for:

<%#= f.date_select :run_date %>

Currently I have:

<%= calendar_date_select_tag "run_date", "", :valid_date_check =>
"date <= (new Date()).stripTime()" %>

But would like the selected date to be automatically loaded
in :run_date ?

-Arun