个人网站禁止复制站点内容

<script type="text/javascript" >

$(document).ready(function(){
   var ctrlDown = false,ctrlKey = 17,cmdKey = 91,vKey = 86, cKey = 67;
   $(document).keydown(function(e) {
        if (e.keyCode == ctrlKey || e.keyCode == cmdKey) {
           ctrlDown = true;
        }
     }).keyup(function(e) {
          if (e.keyCode == ctrlKey || e.keyCode == cmdKey) {
              ctrlDown = false;
          }
   });
   $(document).keydown(function(e) {
      if (ctrlDown && (e.keyCode == cKey)) {
         layer.open({
              title:"${blogTitle!}友情提示",
              content:"本站不允许复制站点内容,如有需要请联系站长。"
          });
          return false;
      }
      if (ctrlDown && (e.keyCode == vKey)) console.log("Document catch Ctrl+V");
   });
   document.oncopy = function(){
       layer.open({
           title:"${blogTitle!}友情提示",
           content:"本站不允许复制站点内容,如有需要请联系站长。"
        });
       return false;
   }
});