jquery禁用右键、文本选择功能、刷新

//禁用右键、文本选择功能、刷新
$(document).bind(“contextmenu”,function(){return false;});
$(document).bind(“selectstart”,function(){return false;});
$(document).keydown(function(){return key(arguments[])});  

//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 == ){
alert(“禁止刷新！”);
return false;
}
}  

//禁用右键、文本选择功能、刷新
    $(document).bind("contextmenu",function(){return false;});
    $(document).bind("selectstart",function(){return false;});
    $(document).keydown(function(){return key(arguments[])});   

 //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 == ){ alert("禁止刷新！");return false;}
        }  

<script>
//屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键
function   document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键
function   window.onhelp(){return false}       //屏蔽F1帮助
function   document.onkeydown(){
    if((window.event.altKey)&&
      ((window.event.keyCode==)||            //屏蔽Alt+方向键←
      (window.event.keyCode==))){            //屏蔽Alt+方向键→
           alert("不准你使用ALT+方向键前进或后退网页！");
           event.returnValue=false;
      }         if((event.keyCode==)||                    //屏蔽退格删除键
      (event.keyCode==)||                   //屏蔽F5刷新键
      (event.ctrlKey && event.keyCode==)){   //Ctrl+R
           event.keyCode=;
           event.returnValue=false;
      }
      if(event.keyCode==){event.keyCode=;event.returnValue=false;}    //屏蔽F11
      if(event.ctrlKey && event.keyCode==)event.returnValue=false;      //屏蔽Ctrl+n
      if(event.shiftKey && event.keyCode==)event.returnValue=false;    //屏蔽shift+F10
      if(window.event.srcElement.tagName=="A" && window.event.shiftKey)
         window.event.returnValue=false;       //屏蔽shift加鼠标左键新开一网页
      if((window.event.altKey)&&(window.event.keyCode==)){             //屏蔽Alt+F4
         window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
         return false;
      }
  }
</script>