If you check Firefox's Error Console (Ctrl+Shift+j), you will see "form1 is not defined". This is because Firefox does not automatically convert form1 into a reference to <form name="form1">. Instead, you need to edit the code a bit.

You can resolve the above error by beginning each function where you refer to form1 with this:

var form1 = document.forms["form1"];

However, this probably will just move the error to the next part of the notation (e.g., textfield3). The proper way to refer to the value of a named form field is:

document.forms["form1"].elements["textfield3"].value

or if you have defined form1,

form1.elements["textfield3"].value

So you have some editing to do. Not sure whether there are any shortcuts.

This forum focuses on end-user support. You can find more web development help on the mozillaZine Web Development board. Separate forum, separate registration.

Thanks very much! I tested a few different permutations; the one that finally worked on Firefox was document.forms["form1"].textfield3.value (the other formats did not work - not sure why). I just replaced all necessary instances and everything worked in all the browsers we tested. I'm a bit disappointed that Firefox needed a little special attention, when other browsers handled the old code just fine, but I'm glad our code wasn't too complicated.