How to disable the text-box click function?

[frankgao]

I want bind and unbind the textbox click function?
I know the bind method,but I don't know unbind.

Code:

function setBtnOk{
  $("#SpCode").textbox('textbox').bind("click", function () {
            alter('OK');
    });
}

[battlezad]

http://api.jquery.com/unbind/