JHeadstart inputtext blocks my javascript

Question

I've put some javascript in a page wich works just fine in firefox (see thread 'Move to the next inputtext with the ENTER key instead of TAB' in Jdeveloper forum). The problem is that it doesn't work in IE.
The folowing code is the problem (without it the script works):
<input type="hidden" name="event"></input>
This is Jheadstart generated and I don't know what it's used for.
What can I do about this?

Answer 1

This is from the bottom part of the page. The inputtext gets rendered form here somewhere I think. In the HTML it's also at the bottom.
  <af:column  gridVisible="false"> 
    <afh:script text="setTableRowCount('dataForm','AanbiedingsRegelsTable' ,#{status.index+1-(bindings.AanbiedingsRegelsTable.rangeStart==-1 ? 0 : bindings.AanbiedingsRegelsTable.rangeStart)});"/>
    <af:inputHidden id="IsNewRow" value="#{AanbiedingsRegelsCollectionModel.newRow}"/>
  </af:column>
</af:table>
<!-- DEBUG:BEGIN:TABLE_GROUP_BUTTONS : default/pageComponent/tableGroupButtons.vm, nesting level: 6 -->
<af:panelButtonBar id="AanbiedingsRegelsTableGroupButtons">
<!-- DEBUG:BEGIN:NEW_BUTTON_NOT_IN_FORM_LAYOUT : default/button/newButtonNotInFormLayout.vm, nesting level: 7 -->
<!-- DEBUG:END:NEW_BUTTON_NOT_IN_FORM_LAYOUT : default/button/newButtonNotInFormLayout.vm, nesting level: 7-->
</af:panelButtonBar>
<!-- DEBUG:END:TABLE_GROUP_BUTTONS : default/pageComponent/tableGroupButtons.vm, nesting level: 6-->
<af:objectSpacer height="10" id="AanbiedingsRegelsTableSpacer"/>
<!-- DEBUG:BEGIN:DETAIL_GROUPS : default/pageComponent/detailGroups.vm, nesting level: 6 -->
<!-- DEBUG:END:DETAIL_GROUPS : default/pageComponent/detailGroups.vm, nesting level: 6-->
</af:panelGroup>
<!-- DEBUG:END:TABLE_GROUP : nbd/pageComponent/tableGroup.vm, nesting level: 5-->
      </af:panelHeader>
        </af:panelGroup>
  <!-- DEBUG:END:DETAIL_GROUPS : default/pageComponent/detailGroups.vm, nesting level: 4-->
</af:panelGroup>
<!-- DEBUG:END:FORM_GROUP : default/pageComponent/formGroup.vm, nesting level: 3-->
<!-- DEBUG:END:FORM_PAGE_CONTENT : default/page/formPageContent.vm, nesting level: 2-->
          </af:panelPage>
        </af:form>
      </afh:body>
    </afh:html>
  </f:view>
</jsp:root>