Disable button on form submission

Question

I have a button that I would like to disable when the form submits to prevent the user submitting multiple times.

I have tried naively disabling the button with java

Answer 1

This is an easier but similar method than what rp has suggested:

function submit(button) {
        Page_ClientValidate(); 
        if(Page_IsValid)
        {
            button.disabled = true;
        }
}