[Htmlunit-user] cant get onclick javascript funcion result

[Tomas G. <t_g...@ho...>]

Hi

I want to run the onclick javascript function, on the html 
code shown below, with java and HtmlUnit and get the info that the 
scripts produce.

<td width="13"><a 
class="img_attachfile16" alt="show files" title="show files" rel="Hide 
files" href="#" onclick="return (DocumentFiles.ShowHideFiles(12, 345234,
 0, this))"></a></td>

What function ShowHideFiles 
do is that when you click on the link with your mouse it will show you 
names of files(in the table cell) that can be downloaded and their urls.
 I want to get this information with java and HtmlUnit but i cant get it
 to work. This is what i've tried:

webClient = new WebClient(BrowserVersion.FIREFOX_17); 

//I dont know if the javascript function uses ajax, but i use this because of tips from internet.  
webClient.setAjaxController(new    NicelyResynchronizingAjaxController());   
HtmlPage page = webClient.getPage(url);
List tables = page3.getByXPath("//table");
//Get the right table
HtmlTable table = (HtmlTable) tables.get(11);
List<HtmlTableCell> cells = tableRow.getCells();
//Get the right cell and its childelement(where the onclick function is).
HtmlElement element = cells.get(10).getFirstElementChild();

String clickAttr = element.getOnClickAttribute();
ScriptResult scriptResult = page.executeJavaScript(clickAttr);

//Get new page
HtmlPage page2 = (HtmlPage) scriptResult.getNewPage();
webClient.waitForBackgroundJavaScript(1000);
System.out.println(page2.asXml());

The new page i get is the same as the original one, meaning that i don't see the extra info i want. 
I've also tried to execute the click from the HtmlElement like this:

//Same as before but now get HtmlAnchor object from right cell
HtmlAnchor anchor = (HtmlAnchor) cells.get(10).getFirstElementChild();
page2 = (HtmlPage) anchor.click();        webClient.waitForBackgroundJavaScript(1000);
System.out.println(page2.asXml());

Like with previous try the new page i get is same as the original one with no extra info.

Have i forgotten something? What else can i try to do? I'm not sure how and when to use to use waitForBackgroundJavaScript and setAjaxController

I would really appreciate suggestions on how to solve this. 

Best regards
/Tomas