I am using Richfaces 2.0 fileupload to upload one file.
But in my case i just want to click in one link and see the browser to select the file. So in my code i have commandLink:                            

<a4j:commandLink id="showFileUpload"
   execute="@this"
   action="#{doSomething.Something(a)}"
   render="@none"
   oncomplete="#{rich:element('stratFileUpload')}.click();"
   >
   <h:graphicImage value="/images/A.png" />
   </a4j:commandLink>

And the part of the fileUpload is just a form with the fileUpload on it:   

<h:form id="stratFileUploadForm">
   <rich:fileUpload id="stratFileUpload" execute="@this"
   fileUploadListener="#{doUploadedFile}"
   onuploadcomplete="
  jQuery(#{rich:element('stratFileUpload')}).find('.rf-fu-itm-lnk').click();
   "
   noDuplicate="true" maxFilesQuantity="1"
   sizeExceededLabel="#{msg['sizeExceeded']}"
   uploadLabel="#{msg['upload']}" />
</h:form>

I already call in the commandLink the id form and rich:fileUpload id but nothing works.
The only way for this to work is with popup, and in that case it came with the "+ Add" button.