Display loading image before pre page load

hi,
We have requirement some pages are loading very slow, while the page is processing we need to display a loading image. How to achieve this requirement.
Especially in IPC on click of one portlet it is taking some time to display in other portlet.
Thanks
Manu

Use Javascript

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Thanks for yor advice.
I need to write the method in Prepare Model method when the page loads and not in AM.
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Hi all
I use JDeveloper 11.1.2.2.0
I have two pages:
first page has a link to a second page
<af:document title="first.jspx" id="d1">
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Edited by: Evgeny Michuk on Oct 4, 2012 11:30 PM

Thanks a lot for your replies and links, it gives me some new knowledges.
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I understand that I can set a value of some attribute for managed bean
and use it to set a value for inputText component of the second page,
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Display loading image before pre page load

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