禁用右键

虽然行为不怎么好，但是事件停止的函数可以参考一下

 

//停止事件冒泡
function stopPropagation(event) {
    var e = event || window.event;
    if (e.stopPropagation)
        e.stopPropagation();
    e.cancelBubble = true;
}

//停止默认事件
function preventDefault(event) {
    var e = event || window.event;
    if (e.preventDefault)
        e.preventDefault();
    e.returnValue = false;
}

//禁用右键菜单
document.oncontextmenu = function(e) { 
    stopPropagation(e);
    preventDefault(e);
};