同时适合ie、firefox、谷歌浏览器下适用，经过筛选代码如下：
复制代码 代码如下:
//禁用右键、文本选择功能、复制按键
$(document).bind(“contextmenu”,function(){return false;});
$(document).bind(“selectstart”,function(){return false;});
$(document).keydown(function(){return key(arguments[0])});//按键时提示警告
function key(e){
var keynum;
if(window.event){
keynum = e.keycode; // ie
}else if(e.which){
keynum = e.which; // netscape/firefox/opera
}
if(keynum == 17){
alert(“禁止复制内容！”);
return false;
}
}
//禁用右键、文本选择功能、复制按键
    $(document).bind(contextmenu,function(){return false;});
    $(document).bind(selectstart,function(){return false;});
    $(document).keydown(function(){return key(arguments[0])});
//按键时提示警告
       function key(e){
            var keynum;
            if(window.event) // ie
              {
                keynum = e.keycode;
              }
            else if(e.which) // netscape/firefox/opera
              {
                keynum = e.which;
              }
            if(keynum == 17){ alert(禁止复制内容！);return false;}
        }