Disc Framework, Async Content and IE

Question

Good Day,
We have implemented JavaPortlets inside weblogic portal that render the page using the request dispatcher and the desktop is using Async Content. When minimizing, restoring the window to normal mode or for any portal event handled by the portlet, the memory increases with Internet Explorer because the old contents are not removed for the memory.
We have tested the portal with FireFox and it works fine without this problem.
The problem is aggravated when the HTML content is big such as flash movies that occupies significant amount of the client memory.
Could any one help us with this, please?

Answer 1

You may need to try and delete the contents of the Portlet's main <div> using removeChild or similar DOM manipulation, just before the innerHTML is replaced (presuming that IE won't release memory when replacing innerHTML but will release the memory if the old DOM is explicitly removed).
To try this you'd need to do the DOM removal/clean-up at the right time but taking advantage of the Disc lifecycle events:
[http://download.oracle.com/docs/cd/E13155_01/wlp/docs103/clientdev/disc.html#wp1016804]
I think OnPrepareMarkup would the the right time to do it. You can add a listener to that event, like in this example:
[http://download.oracle.com/docs/cd/E13155_01/wlp/docs103/clientdev/disc.html#wp1020678]