Some time back, I was working on some code at work where we wanted to dynamically disable and re-enable certain form elements based on other user input. Internet Explorer adds a “disabled” property to form elements that makes this simple. But Netscape 4.x doesn’t.
I eventually came up with some Javascript code that more-or-less simulates the ability to disable form elements in NS4. If anybody is interested, feel free to use my code in your own projects.