Timer refresh

This is probably a javascript issue (of which I have almost no knowledge) but can someone tell me if it's possible to have one of my pages refresh automatically on a time interval?
Thanks.
Bill

Scott, Sergio,
I am building an app that is going to manage a bidding process in which each bidder has a designated time in which to bid. If their time runs out, I need that to trigger e-mail notifications and entries to the database.
I should be able to use the javascript technique above to do this by an on load process that writes the sysdate to a table and then using a trigger on that table. However, this seems like an awkward way to do it since I have to establish and maintain a session. That session must have the page I have the javascript timer open and refreshing properly continuously. It will hinge on a constant Internet connection and no "hiccups".
I found I could not use the package dbms_lock.sleep inside an HTML DB procedure. Are there any other options?
Thanks.
Bill

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