Edit "Warning: Javascript Window" Message

[P.S.Newbie]

Hi

Newbie here - I have changed the formatting of a field to Arbitrary Mask for numbers to be displayed in a certain way. Eg: ABN Numbers to be completed on an application form in the following sequence:

99 999 999 999

Is there any way to change the Warning message from the Javascript Pop-up?? (see below)

I basically just need it to say: "ABN must be 11 digits" > as i have clients filling out this form - the pop up error needs to be very simple and explanatory.

If there is no way to do this due to the Arbitrary Mask formatting - is there any other way I can do this without losing the number sequence formatting of : 99 999 999 999??

Please help? 

[ls_rbls]

You can do the arbitrary mask as a custom keystroke script or as custom validtion script, for example.

 If the user doesn't enter the desired format it can throw a customized alert and reset the field .

Is this  what you're asking about?

[try67]

You can't change it, but you can write your own code that will do the validation, and then you can use any message you'd like. However, the "warning: javsscript window" part will still appear, as it's a built-in part of any alert window that isn't executed from a trusted context.

[Test Screen Name]

The caption is a VITAL security protection, to stop people faking other dialogs (to steal passwords etc.). Train your users to be delighted by the caption!