Rails spinoffs - Dec 2007 - Get and obtain a result with prototype

Hi first thanks for taking the time to read this question. here we
go..

i am making a is typing message for my Ajax Based Chat. right now i
want to do this..

 idUser = the  id of the registered user
 bridgeConection = the channel of selection of all messages

(example : SELECT messages FROM chat WHERE bridge_conection = 88) the
same goes when i insert the data on the data base.

WHEN JOES TYPES A MESSAGE THIS WHAT I WANT TO HAPPEND

 ( send a Ajax.Updater but take id=idUser (001)  and
id=bridgeConection (88) and update one data base table and the query
goes like this.

 statuses
 0 = not typing
 1 = is typing

 SQL CODE:

  UPDATE typing SET status = ''1''  WHERE bridge_conection` =
''88''  and
id_user=''001''

after that i want to read that status. for that we need another
function that will get that result every 3 seconds.

 CODE:

 function getStatus()
{

 get the status from the other user and if it is 1 show an inner html
(user is currently typing a message...) if it is 0 dont show
anything.

}

getStatus();

return the status with a $(''keyboard_status'').innerHTML =
''user is
currently typing a message...'';

<div id=''keyboard_status''></div>

how do i do this using prototype can some one please really guide me
onto this thanks in advance my MSN is
systm.span...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org (email
to CHAT) . i will apreciate the person that would take the time
helping me :D
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