$("#cke_bdy").bind("keypress", function(e) {

some code...
});

element.addEventListener(type, listener, useCapture);

element.removeEventListener(type, listener, useCapture);

// For instance
var onClickOnId = function () {
    console.log('click on #id');
}

document.getElementById('#id').addEventListener('click', onClickOnId, true);

document.getElementById('#id').removeEventListener('click', onClickOnId, true);