how to overide dopost method

[Steve]

Hello,
How do I override the doPost method of a textarea box? I need the post
to post a great deal of data. Any JavaScript would be welcome.

Steve

 

[Hywel]

Hello,
How do I override the doPost method of a textarea box? I need the post
to post a great deal of data. Any JavaScript would be welcome.

What's "doPost"? Is it a made up JavaScript function? It's not
mentioned in the spec.