How to change document text with Javascript?

[admin]

I must say this one has me baffled, although you would think it obvious. I need to write a script to change part of the text in a document. Is there a way to do this? (For example, you click on a button and the text on the page changes.) The only way I was able to do it is by plaing the text in a named textbox and then changing its .value property. But the textbox is a poor choice. I need to have regular text changed. I have thought of convoluted ways to reload the document, but there must be a simple way. Any clues?

Thanks.

George