JavaScript code to be run prior to the prompter being shown.

Default value

Blank. No JavaScript is run.

Valid values

Any valid JavaScript function, or JavaScript code followed by a semicolon (;) or double backslash (//). A section of JavaScript followed by a semicolon indicates the script should to flow into the existing submit JavaScript, whereas the double backslash indicates that the rest of the submit JavaScript for WAM submits is to be commented out.