PPT Slide
Use javascript for field validation in the browser.
On a netscape browser, type in javascript: as the url to bring up the javascript console.
Know what version of javascript you are running.
JavaScript 1.0: Supported by Netscape Navigator 2.x
JavaScript 1.1: Supported by Netscape Navigator 3.x
JavaScript 1.2: Supported by Netscape Navigator 4.x