禁用F12,屏蔽鼠標右擊、

    $(document).ready(function(){
    $(document).bind("contextmenu",function(e){
          return false;
    });
});
document.onkeydown=function (e){
        var currKey=0,evt=e||window.event;
        currKey=evt.keyCode||evt.which||evt.charCode;
        if (currKey == 123) {
            window.event.cancelBubble = true;
            window.event.returnValue = false;
        }
    }