Refresh display image item without reload page

hi all, is a way to refresh (requery) a display image item to change the image via botton and do not reload page ?
thanks
Edited by: Reza.Gh. on Sep 24, 2012 11:56 AM

I create a sample app :
https://apex.oracle.com/pls/apex/f?p=9310:1
code of item P1_CAPTCHA_IMG :
SELECT captcha_img FROM captcha WHERE response = :P1_CAP_V;
item P1_CAP_V code (computations) :
SELECT *
FROM (
SELECT response
FROM captcha
ORDER BY
dbms_random.value
WHERE rownum = 1 ;
Refresh botton code :
action 1 :
SELECT * into :P1_CAP_V
FROM (
SELECT response
FROM captcha
ORDER BY
dbms_random.value
WHERE rownum = 1;
action 2:
refresh item P1_CAPTCHA_IMG

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My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

Refresh display image item without reload page

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