Help! Going mad!

[Fred Bloggs]

Hi, I'm a complete newbie to javascript.
I downloaded the script
http://javascript.internet.com/math-...d/calculate.js

to use in a seminar registration form. It works fine in IE7, but in FF
nothing happens. When I look at the error console it gives the error:

Line 20: Calc is not defined (line 20 is
if (calc.item1.checked){I've looked all over the net to find out why FF
doesn't like this. Can anyone help? What should it be changed to?Many
thanks.Fred.

[David Dorward]

On Sep 24, 12:29 pm, "Fred Bloggs" <[e-mail]:

Hi, I'm a complete newbie to javascript.
I downloaded the scripthttp://javascript.internet.com/math-related/calculate.js

Line 20: Calc is not defined (line 20 is
if (calc.item1.checked){I've looked all over the net to find out why FF
doesn't like this.

http://www.jibbering.com/faq/#FAQ4_41

--
David Dorward
http://dorward.me.uk/
http://blog.dorward.me.uk/

[Michael White]

Fred Bloggs wrote:

Hi, I'm a complete newbie to javascript.
I downloaded the script
http://javascript.internet.com/math-...d/calculate.js

to use in a seminar registration form. It works fine in IE7, but in FF
nothing happens. When I look at the error console it gives the error:

Line 20: Calc is not defined (line 20 is
if (calc.item1.checked){I've looked all over the net to find out why FF
doesn't like this. Can anyone help? What should it be changed to?Many
thanks.Fred.

The question should be:
Why does this script work in IE7?
Your error looks suspicious, too.
Should be:
Line 20: calc is not defined

The answer:
You need to create a "valid" reference to the checkbox.
Mick