When click on button in jsp portlet, the portlet is reloaded

Hi all
I have a jsp portlet containing a number of divs and buttons. When the user clicks on a specific button, I use javascript to hide and/or display specific divs.
However, in Weblogic Portal 10.3 (using IE 8 or FF 3.5.3) the whole portlet is reloaded when I click on a button.
This results in the default screen being displayed again.
Is there a way that I can prevent Weblogic Portal from reloading the portlet when javascript is executed in the portlet?

Can you send source for how you create your button? Is it <input> or <button> ?
I suspect what's happening is that your button has no type, so it's defaulting to "submit" behavior, reposting the page.
Try using <button type="button" ...> and see if that doesn't fix it.
-Chris

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