PHP calculation.

[Jackster]

My site has two currencies.

USD and GBP


What I want to do is have something like this on the side bar:


$[..........] [=] £[.........]

Box on the left would be to enter USD.

Pressing the middle button would show the rate it would be in GBP.

And it would have to work the other way by entering GBP on the right and getting USD on the left.

How could I do that?

Thanks
Jack,

[Toonshorty]

Javascript.

Code that works like:

Textbox1.buttonPressDown {
convertCurrency();
}