[RESOLVED] make a textbox apeare when check a checkbox?

[Visslan]

I have a checkbox and I want the functionality to be:

when checked a textbox will appeare

when uncheck the textbox will disapear

Does anyone know what to do?

I have a function oncheckedchanged for the checkbox. But now I have to make it post back or something.

[Visslan]

Oh okey AutoPostback