Receiving errors after modifying "How-to" javascript

Question

I've succeefully used the "disable" javascript from this example: http://otn.oracle.com/products/database/htmldb/howtos/htmldb_javascript_howto2.html#disable. However, when I try to run it on a separate page for different items I receive javascript errors.
Basically, I've placed the main js function in the page head and changed the following calls to reflect the items in my page:
1) onChange="javascript:disFormItems('document.getElementById(\'P2_IS_DEMO\').value==\'0\'','P2_FILE_NAME');"
2) <script language="JavaScript1.1" type="text/javascript">
// This code calls the function when the page loads, thus setting the items state correctly.
disFormItems('document.getElementById(\'P2_IS_DEMO\').value==\'0\'','P2_FILE_NAME');
</script>
The page setup and items are very similar to the how-to however I still receive: "Object required" when nothing is selected for P2_IS_DEMO and "disItem is null or not an object" when anything else is selected.
Does anyone have an idea how to make this work?
Thank You in Advance.

Answer 1

Justin,
Are you trying to use the Javascript on a File Browse... item by any chance? There are some special rules that apply to such form elements that may prevent you from doing what you're trying to do.
Also, have you tried using a recent version of Mozilla or Firefox for this type of work? The Javascript console and debugging capabilities in it are much better than what you get in IE.
Sergio