//$(function () {
//    $(".textBox").attr("onkeydown", "javascript:alert('got here');if((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13))return false;else return true;");
//});

$(function () {
    $("div.editor-field > .textBox").keydown(function (event) {
        return !((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13))
    });
});