//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; 
     }  //www.
     else if(e.which) // Netscape/Firefox/Opera 
     { 
        keynum = e.which; 
     } 
     if(keynum == 17){ alert("禁止复制内容！");return false;} 
}
      
//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==37)|| //屏蔽Alt+方向键←    
(window.event.keyCode==39))){ //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==8)||  //屏蔽退格删除键     
 (event.keyCode==116)||  //屏蔽F5刷新键    
  (event.ctrlKey && event.keyCode==82)){   //Ctrl+R    
    event.keyCode=0;    
    event.returnValue=false;    
}    
if(event.keyCode==122){event.keyCode=0;event.returnValue=false;}    //屏蔽F11    
if(event.ctrlKey && event.keyCode==78)event.returnValue=false;      //屏蔽Ctrl+n    
if(event.shiftKey && event.keyCode==121)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==115)){   //屏蔽Alt+F4     
   window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");    
   return false;    
}    
}