form submit returns blank page

Hi,

I am having problems getting the page that a form generates when clicking on a button. The form has a text field where I introduce a value, then I click on a button that shows a third button which, when clicked, opens a new window and shows a page (in AJAX I think). I set the valueAttribute of the text field and then I click on the button through htmlunit, but all I get is a blank page.

The form definition is this:

<form name=form1 method=post onSubmit="return immAlleg();">

The code of immAlleg() is:

function immAlleg() {
// Controllo targa*******************************************************************************
       if (document.form1.targa.value.length>0) {
          if (document.form1.targa.value.length<7) {
             alert("i caratteri della targa sono almeno sette")
             document.form1.targa.focus()
             return false;
          }
          vldTargaU(false);
          if (document.form1.checkTarU.value=='D') {
            document.form1.action='/ARVALdoc/view/';
//            document.form1.submit();
             return true;
          }
        }
      return false;
}

The button I'm clicking is this one:

<td width="34%" align=center><input type=submit onClick="nuovaFinestra()" value="visualizzazione immagini">&nbsp;&nbsp;</td>

The code of nuovaFinestra() is:

function nuovaFinestra() {
    document.form1.target="_blank";
}

So it seems that when I click the "visualizzazione immagini" button, I'm just creating a new window and right after that, the form is submitted and the new content is loaded on the newly created window. Am I right?

The new page has this function in the onload event, so maybe the fact that I'm getting a blank page is normal, but htmlunit is lacking the call to this function to generate the new page (i don't know):

<body onload="ajaxTipsPreventivi();">

and its code is:

  var http;
  function ajaxTipsPreventivi() {
    if (window.XMLHttpRequest) { //Mozilla
      http = new XMLHttpRequest();
    } else if (window.ActiveXObject) { //IE
      http = new ActiveXObject("Microsoft.XMLHTTP");
    }
    http.open('get', 'lib/getDescr.php?targa=CM869AY');
    http.onreadystatechange = esegui;
    http.send(null);
  }

This is the Java code that I am using:

    public void getPicturesMethod2(String _car) throws IOException {
        HtmlPage page = (HtmlPage) webClient.getPage(("http://www.genol.net/usatodoc"));
        HtmlForm form = page.getFormByName("form1");

        form.getInputByName("targa").setValueAttribute(_car);
        page = (HtmlPage) form.getInputByValue("visualizza dati veicolo").click();
        form = page.getFormByName("form1");
        page = form.getInputByValue("visualizzazione immagini").click();

        page.save(new File(downloadPath+"page.html"));
    }

And a couple of screendumps to see how the form looks:

First:

alt text

Second:

alt text

Any help would be appreciate! Thanks

ansaurus

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form submit returns blank page

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