Disabling onclick attribute with javascript

Question

How do I disable the other onclick event once one of them has been activated. Both divs are set to display:none; in the CSS. This is probably really simple but I am new to p

Answer 1

function showDiv(id) {
    if ( showDiv.executed ) {
        return false;
    }

    if  ( id === "leftbutton" ) {
       document.getElementById('orangediv').style.display = 'block';
    } else {
       document.getElementById('greendiv').style.display = 'block';
    }

    showDiv.executed = true;
}

showDiv.executed = false;

Doing it this way, you could always re-enable the showing by simply setting showDiv.executed to false.