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executing a javascript function from a servlet

 
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I have a portlet that performs a file-upload that uses ajax. The form is in a jsp page and the action executes a servlet and the form also executes a javascript function onsubmit()



My servlet uploads the file correctly but I need to execute the killUpdate() function in order to stop the update listener, though I don't know how to do it. The example code that I obtained has the function being called like below but this won't work within the portal. Here is a snippet of my servlet that tries to call the javascript function



Any suggestions?

Thanks.




 
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