Form Parameter Undefined

Hi everybody!

I've got a problem with a jsp, which contains a form.

This page has always worked fine, It's the first time I try to midify it, but when I try to go on that page I get this error (using firebug to identify it):

document.prova.flag is undefined

where prova è il form and flag is a parameter.

The error gets raised fro a javascript that tries to set the parameter value:
(I just commented the rest to isolate the possible cause)

Code:

---

<SCRIPT LANGUAGE="JavaScript">
function view(form){
 document.prova.flag.value = 'GC';
 //document.all.linkPageDGC.style.display = 'none';
 //document.all.NOlinkPageDGC.style.display = '';
//if((abilitazioniUtente.getInserimentoGiroconto()).equals("true")){
 //document.all.linkPageGC.style.display = '';
 //document.all.NOlinkPageGC.style.display = 'none';
// }
if(GC != null && false){
 //document.all.linkPageDGC.style.display = '';
 //document.all.NOlinkPageDGC.style.display = 'none';
 //document.all.linkPageGC.style.display = 'none';
 //document.all.NOlinkPageGC.style.display = '';
 document.prova.flag.value = 'GC';
 document.prova.flagView.value = 'nuovoGC';
 }
}

---

Following the Form and parameter:

Code:

---

<form name="prova">
<input type='hidden' name='flag' value=''>

---

Thanks a lot

Max

That's an html/javascript question which has nothing to do with Java.
Ask in a relevant forum.

add id to the hidden form element
<input type='hidden' id='flag' name='flag' value=''>

And

in the javascript instead of document.prova.flag.value
use document.getElementById('flag').value

Thread not related to Java. Locking.